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Finding the Fourth Proportional to 425,397.64, 638,108.82 and 159,107.34

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Solution

The fourth proportional to 425,397.64, 638,108.82 and 159,107.34 is: 238,665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,397.64 : 638,108.82 = 159,107.34 : x
  2. Step 2: Convert to fraction form
    425,397.64/638,108.82 = 159,107.34/x
  3. Step 3: Cross multiply
    425,397.64x = 638,108.82 × 159,107.34
  4. Step 4: Simplify right side
    425,397.64x = 101,527,796,980.74
  5. Step 5: Solve for x
    x = 101,527,796,980.74/425,397.64
  6. Step 6: Final answer
    x = 238,665.63

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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.