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Finding the Fourth Proportional to 425,772.24, 638,707.76 and 141,488.16

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Solution

The fourth proportional to 425,772.24, 638,707.76 and 141,488.16 is: 212,248.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,772.24 : 638,707.76 = 141,488.16 : x
  2. Step 2: Convert to fraction form
    425,772.24/638,707.76 = 141,488.16/x
  3. Step 3: Cross multiply
    425,772.24x = 638,707.76 × 141,488.16
  4. Step 4: Simplify right side
    425,772.24x = 90,369,585,740.12
  5. Step 5: Solve for x
    x = 90,369,585,740.12/425,772.24
  6. Step 6: Final answer
    x = 212,248.66

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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.