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Finding the Fourth Proportional to 453,688.52, 680,532.77 and 138,145.43

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Solution

The fourth proportional to 453,688.52, 680,532.77 and 138,145.43 is: 207,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,688.52 : 680,532.77 = 138,145.43 : x
  2. Step 2: Convert to fraction form
    453,688.52/680,532.77 = 138,145.43/x
  3. Step 3: Cross multiply
    453,688.52x = 680,532.77 × 138,145.43
  4. Step 4: Simplify right side
    453,688.52x = 94,012,494,187.44
  5. Step 5: Solve for x
    x = 94,012,494,187.44/453,688.52
  6. Step 6: Final answer
    x = 207,218.15

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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.