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Finding the Fourth Proportional to 559,121.52, 838,682.18 and 138,397.41

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Solution

The fourth proportional to 559,121.52, 838,682.18 and 138,397.41 is: 207,596.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,121.52 : 838,682.18 = 138,397.41 : x
  2. Step 2: Convert to fraction form
    559,121.52/838,682.18 = 138,397.41/x
  3. Step 3: Cross multiply
    559,121.52x = 838,682.18 × 138,397.41
  4. Step 4: Simplify right side
    559,121.52x = 116,071,440,833.17
  5. Step 5: Solve for x
    x = 116,071,440,833.17/559,121.52
  6. Step 6: Final answer
    x = 207,596.09

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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.