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Finding the Fourth Proportional to 647,445.20, 970,876.20 and 247,953.20

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Solution

The fourth proportional to 647,445.20, 970,876.20 and 247,953.20 is: 371,818.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,445.20 : 970,876.20 = 247,953.20 : x
  2. Step 2: Convert to fraction form
    647,445.20/970,876.20 = 247,953.20/x
  3. Step 3: Cross multiply
    647,445.20x = 970,876.20 × 247,953.20
  4. Step 4: Simplify right side
    647,445.20x = 240,731,860,593.84
  5. Step 5: Solve for x
    x = 240,731,860,593.84/647,445.20
  6. Step 6: Final answer
    x = 371,818.13

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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.