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Finding the Fourth Proportional to 453,990.41, 680,983.80 and 138,446.41

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Solution

The fourth proportional to 453,990.41, 680,983.80 and 138,446.41 is: 207,669.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,990.41 : 680,983.80 = 138,446.41 : x
  2. Step 2: Convert to fraction form
    453,990.41/680,983.80 = 138,446.41/x
  3. Step 3: Cross multiply
    453,990.41x = 680,983.80 × 138,446.41
  4. Step 4: Simplify right side
    453,990.41x = 94,279,762,378.16
  5. Step 5: Solve for x
    x = 94,279,762,378.16/453,990.41
  6. Step 6: Final answer
    x = 207,669.06

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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.