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Finding the Fourth Proportional to 453,864.43, 680,897.76 and 138,345.94

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Solution

The fourth proportional to 453,864.43, 680,897.76 and 138,345.94 is: 207,549.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,864.43 : 680,897.76 = 138,345.94 : x
  2. Step 2: Convert to fraction form
    453,864.43/680,897.76 = 138,345.94/x
  3. Step 3: Cross multiply
    453,864.43x = 680,897.76 × 138,345.94
  4. Step 4: Simplify right side
    453,864.43x = 94,199,440,651.09
  5. Step 5: Solve for x
    x = 94,199,440,651.09/453,864.43
  6. Step 6: Final answer
    x = 207,549.73

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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.