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Finding the Fourth Proportional to 453,340.80, 680,178.60 and 187,124.40

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Solution

The fourth proportional to 453,340.80, 680,178.60 and 187,124.40 is: 280,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,340.80 : 680,178.60 = 187,124.40 : x
  2. Step 2: Convert to fraction form
    453,340.80/680,178.60 = 187,124.40/x
  3. Step 3: Cross multiply
    453,340.80x = 680,178.60 × 187,124.40
  4. Step 4: Simplify right side
    453,340.80x = 127,278,012,417.84
  5. Step 5: Solve for x
    x = 127,278,012,417.84/453,340.80
  6. Step 6: Final answer
    x = 280,755.70

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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.