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Finding the Fourth Proportional to 425,953.89, 638,744.40 and 159,527.61

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Solution

The fourth proportional to 425,953.89, 638,744.40 and 159,527.61 is: 239,221.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,953.89 : 638,744.40 = 159,527.61 : x
  2. Step 2: Convert to fraction form
    425,953.89/638,744.40 = 159,527.61/x
  3. Step 3: Cross multiply
    425,953.89x = 638,744.40 × 159,527.61
  4. Step 4: Simplify right side
    425,953.89x = 101,897,367,532.88
  5. Step 5: Solve for x
    x = 101,897,367,532.88/425,953.89
  6. Step 6: Final answer
    x = 239,221.59

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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.