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Finding the Fourth Proportional to 487,830.59, 731,212.10 and 251,187.47

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Solution

The fourth proportional to 487,830.59, 731,212.10 and 251,187.47 is: 376,506.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,830.59 : 731,212.10 = 251,187.47 : x
  2. Step 2: Convert to fraction form
    487,830.59/731,212.10 = 251,187.47/x
  3. Step 3: Cross multiply
    487,830.59x = 731,212.10 × 251,187.47
  4. Step 4: Simplify right side
    487,830.59x = 183,671,318,946.43
  5. Step 5: Solve for x
    x = 183,671,318,946.43/487,830.59
  6. Step 6: Final answer
    x = 376,506.36

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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.