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Finding the Fourth Proportional to 372,384.30, 558,521.10 and 135,671.79

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Solution

The fourth proportional to 372,384.30, 558,521.10 and 135,671.79 is: 203,487.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,384.30 : 558,521.10 = 135,671.79 : x
  2. Step 2: Convert to fraction form
    372,384.30/558,521.10 = 135,671.79/x
  3. Step 3: Cross multiply
    372,384.30x = 558,521.10 × 135,671.79
  4. Step 4: Simplify right side
    372,384.30x = 75,775,557,389.77
  5. Step 5: Solve for x
    x = 75,775,557,389.77/372,384.30
  6. Step 6: Final answer
    x = 203,487.52

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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.