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Finding the Fourth Proportional to 372,398.34, 558,461.43 and 135,670.98

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Solution

The fourth proportional to 372,398.34, 558,461.43 and 135,670.98 is: 203,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,398.34 : 558,461.43 = 135,670.98 : x
  2. Step 2: Convert to fraction form
    372,398.34/558,461.43 = 135,670.98/x
  3. Step 3: Cross multiply
    372,398.34x = 558,461.43 × 135,670.98
  4. Step 4: Simplify right side
    372,398.34x = 75,767,009,500.30
  5. Step 5: Solve for x
    x = 75,767,009,500.30/372,398.34
  6. Step 6: Final answer
    x = 203,456.89

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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.