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Finding the Fourth Proportional to 425,523.72, 638,479.35 and 159,304.98

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Solution

The fourth proportional to 425,523.72, 638,479.35 and 159,304.98 is: 239,030.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,523.72 : 638,479.35 = 159,304.98 : x
  2. Step 2: Convert to fraction form
    425,523.72/638,479.35 = 159,304.98/x
  3. Step 3: Cross multiply
    425,523.72x = 638,479.35 × 159,304.98
  4. Step 4: Simplify right side
    425,523.72x = 101,712,940,082.16
  5. Step 5: Solve for x
    x = 101,712,940,082.16/425,523.72
  6. Step 6: Final answer
    x = 239,030.01

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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.