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Finding the Fourth Proportional to 617,959.10, 926,938.65 and 218,612.90

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Solution

The fourth proportional to 617,959.10, 926,938.65 and 218,612.90 is: 327,919.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,959.10 : 926,938.65 = 218,612.90 : x
  2. Step 2: Convert to fraction form
    617,959.10/926,938.65 = 218,612.90/x
  3. Step 3: Cross multiply
    617,959.10x = 926,938.65 × 218,612.90
  4. Step 4: Simplify right side
    617,959.10x = 202,640,746,398.59
  5. Step 5: Solve for x
    x = 202,640,746,398.59/617,959.10
  6. Step 6: Final answer
    x = 327,919.35

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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.