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Finding the Fourth Proportional to 488,058.40, 731,504.40 and 251,279.20

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Solution

The fourth proportional to 488,058.40, 731,504.40 and 251,279.20 is: 376,618.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,058.40 : 731,504.40 = 251,279.20 : x
  2. Step 2: Convert to fraction form
    488,058.40/731,504.40 = 251,279.20/x
  3. Step 3: Cross multiply
    488,058.40x = 731,504.40 × 251,279.20
  4. Step 4: Simplify right side
    488,058.40x = 183,811,840,428.48
  5. Step 5: Solve for x
    x = 183,811,840,428.48/488,058.40
  6. Step 6: Final answer
    x = 376,618.54

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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.