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Finding the Fourth Proportional to 518,854.40, 778,281.60 and 203,206.40

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Solution

The fourth proportional to 518,854.40, 778,281.60 and 203,206.40 is: 304,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,854.40 : 778,281.60 = 203,206.40 : x
  2. Step 2: Convert to fraction form
    518,854.40/778,281.60 = 203,206.40/x
  3. Step 3: Cross multiply
    518,854.40x = 778,281.60 × 203,206.40
  4. Step 4: Simplify right side
    518,854.40x = 158,151,802,122.24
  5. Step 5: Solve for x
    x = 158,151,802,122.24/518,854.40
  6. Step 6: Final answer
    x = 304,809.60

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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.