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Finding the Fourth Proportional to 487,907.60, 731,486.22 and 247,824.23

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Solution

The fourth proportional to 487,907.60, 731,486.22 and 247,824.23 is: 371,545.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,907.60 : 731,486.22 = 247,824.23 : x
  2. Step 2: Convert to fraction form
    487,907.60/731,486.22 = 247,824.23/x
  3. Step 3: Cross multiply
    487,907.60x = 731,486.22 × 247,824.23
  4. Step 4: Simplify right side
    487,907.60x = 181,280,009,227.11
  5. Step 5: Solve for x
    x = 181,280,009,227.11/487,907.60
  6. Step 6: Final answer
    x = 371,545.78

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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.