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Finding the Fourth Proportional to 425,380.65, 586,829.28 and 272,345.31

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Solution

The fourth proportional to 425,380.65, 586,829.28 and 272,345.31 is: 375,711.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,380.65 : 586,829.28 = 272,345.31 : x
  2. Step 2: Convert to fraction form
    425,380.65/586,829.28 = 272,345.31/x
  3. Step 3: Cross multiply
    425,380.65x = 586,829.28 × 272,345.31
  4. Step 4: Simplify right side
    425,380.65x = 159,820,202,178.68
  5. Step 5: Solve for x
    x = 159,820,202,178.68/425,380.65
  6. Step 6: Final answer
    x = 375,711.03

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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.