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Finding the Fourth Proportional to 539,946.30, 809,919.45 and 240,426.30

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Solution

The fourth proportional to 539,946.30, 809,919.45 and 240,426.30 is: 360,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,946.30 : 809,919.45 = 240,426.30 : x
  2. Step 2: Convert to fraction form
    539,946.30/809,919.45 = 240,426.30/x
  3. Step 3: Cross multiply
    539,946.30x = 809,919.45 × 240,426.30
  4. Step 4: Simplify right side
    539,946.30x = 194,725,936,661.54
  5. Step 5: Solve for x
    x = 194,725,936,661.54/539,946.30
  6. Step 6: Final answer
    x = 360,639.45

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.