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Finding the Fourth Proportional to 453,990.23, 680,983.52 and 138,446.22

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Solution

The fourth proportional to 453,990.23, 680,983.52 and 138,446.22 is: 207,668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,990.23 : 680,983.52 = 138,446.22 : x
  2. Step 2: Convert to fraction form
    453,990.23/680,983.52 = 138,446.22/x
  3. Step 3: Cross multiply
    453,990.23x = 680,983.52 × 138,446.22
  4. Step 4: Simplify right side
    453,990.23x = 94,279,593,534.06
  5. Step 5: Solve for x
    x = 94,279,593,534.06/453,990.23
  6. Step 6: Final answer
    x = 207,668.77

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1.5x scale

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.