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Finding the Fourth Proportional to 418,920.30, 628,003.56 and 152,493.87

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Solution

The fourth proportional to 418,920.30, 628,003.56 and 152,493.87 is: 228,603.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,920.30 : 628,003.56 = 152,493.87 : x
  2. Step 2: Convert to fraction form
    418,920.30/628,003.56 = 152,493.87/x
  3. Step 3: Cross multiply
    418,920.30x = 628,003.56 × 152,493.87
  4. Step 4: Simplify right side
    418,920.30x = 95,766,693,238.18
  5. Step 5: Solve for x
    x = 95,766,693,238.18/418,920.30
  6. Step 6: Final answer
    x = 228,603.61

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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.