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Finding the Fourth Proportional to 608,445.60, 912,711.60 and 187,720.80

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Solution

The fourth proportional to 608,445.60, 912,711.60 and 187,720.80 is: 281,594.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,445.60 : 912,711.60 = 187,720.80 : x
  2. Step 2: Convert to fraction form
    608,445.60/912,711.60 = 187,720.80/x
  3. Step 3: Cross multiply
    608,445.60x = 912,711.60 × 187,720.80
  4. Step 4: Simplify right side
    608,445.60x = 171,334,951,721.28
  5. Step 5: Solve for x
    x = 171,334,951,721.28/608,445.60
  6. Step 6: Final answer
    x = 281,594.53

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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.