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Finding the Fourth Proportional to 418,170.72, 627,058.44 and 162,123.24

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Solution

The fourth proportional to 418,170.72, 627,058.44 and 162,123.24 is: 243,108.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,170.72 : 627,058.44 = 162,123.24 : x
  2. Step 2: Convert to fraction form
    418,170.72/627,058.44 = 162,123.24/x
  3. Step 3: Cross multiply
    418,170.72x = 627,058.44 × 162,123.24
  4. Step 4: Simplify right side
    418,170.72x = 101,660,745,962.15
  5. Step 5: Solve for x
    x = 101,660,745,962.15/418,170.72
  6. Step 6: Final answer
    x = 243,108.24

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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.