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Finding the Fourth Proportional to 425,838.39, 638,732.39 and 159,576.63

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Solution

The fourth proportional to 425,838.39, 638,732.39 and 159,576.63 is: 239,355.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,838.39 : 638,732.39 = 159,576.63 : x
  2. Step 2: Convert to fraction form
    425,838.39/638,732.39 = 159,576.63/x
  3. Step 3: Cross multiply
    425,838.39x = 638,732.39 × 159,576.63
  4. Step 4: Simplify right side
    425,838.39x = 101,926,761,470.16
  5. Step 5: Solve for x
    x = 101,926,761,470.16/425,838.39
  6. Step 6: Final answer
    x = 239,355.50

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1.5x scale

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.