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Finding the Fourth Proportional to 425,809.26, 638,816.49 and 159,572.13

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Solution

The fourth proportional to 425,809.26, 638,816.49 and 159,572.13 is: 239,396.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,809.26 : 638,816.49 = 159,572.13 : x
  2. Step 2: Convert to fraction form
    425,809.26/638,816.49 = 159,572.13/x
  3. Step 3: Cross multiply
    425,809.26x = 638,816.49 × 159,572.13
  4. Step 4: Simplify right side
    425,809.26x = 101,937,307,988.42
  5. Step 5: Solve for x
    x = 101,937,307,988.42/425,809.26
  6. Step 6: Final answer
    x = 239,396.64

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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.