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Finding the Fourth Proportional to 372,384.17, 558,138.85 and 172,281.87

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Solution

The fourth proportional to 372,384.17, 558,138.85 and 172,281.87 is: 258,220.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,384.17 : 558,138.85 = 172,281.87 : x
  2. Step 2: Convert to fraction form
    372,384.17/558,138.85 = 172,281.87/x
  3. Step 3: Cross multiply
    372,384.17x = 558,138.85 × 172,281.87
  4. Step 4: Simplify right side
    372,384.17x = 96,157,205,336.03
  5. Step 5: Solve for x
    x = 96,157,205,336.03/372,384.17
  6. Step 6: Final answer
    x = 258,220.44

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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.