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Finding the Fourth Proportional to 472,781.50, 652,440.05 and 257,926.10

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Solution

The fourth proportional to 472,781.50, 652,440.05 and 257,926.10 is: 355,938.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,781.50 : 652,440.05 = 257,926.10 : x
  2. Step 2: Convert to fraction form
    472,781.50/652,440.05 = 257,926.10/x
  3. Step 3: Cross multiply
    472,781.50x = 652,440.05 × 257,926.10
  4. Step 4: Simplify right side
    472,781.50x = 168,281,317,580.31
  5. Step 5: Solve for x
    x = 168,281,317,580.31/472,781.50
  6. Step 6: Final answer
    x = 355,938.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.