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Finding the Fourth Proportional to 315,006.30, 472,509.45 and 149,118.30

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Solution

The fourth proportional to 315,006.30, 472,509.45 and 149,118.30 is: 223,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,006.30 : 472,509.45 = 149,118.30 : x
  2. Step 2: Convert to fraction form
    315,006.30/472,509.45 = 149,118.30/x
  3. Step 3: Cross multiply
    315,006.30x = 472,509.45 × 149,118.30
  4. Step 4: Simplify right side
    315,006.30x = 70,459,805,917.94
  5. Step 5: Solve for x
    x = 70,459,805,917.94/315,006.30
  6. Step 6: Final answer
    x = 223,677.45

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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.