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Finding the Fourth Proportional to 487,908.80, 731,863.20 and 251,172.80

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Solution

The fourth proportional to 487,908.80, 731,863.20 and 251,172.80 is: 376,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,908.80 : 731,863.20 = 251,172.80 : x
  2. Step 2: Convert to fraction form
    487,908.80/731,863.20 = 251,172.80/x
  3. Step 3: Cross multiply
    487,908.80x = 731,863.20 × 251,172.80
  4. Step 4: Simplify right side
    487,908.80x = 183,824,129,160.96
  5. Step 5: Solve for x
    x = 183,824,129,160.96/487,908.80
  6. Step 6: Final answer
    x = 376,759.20

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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.