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Finding the Fourth Proportional to 296,660.64, 444,679.92 and 138,756

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Solution

The fourth proportional to 296,660.64, 444,679.92 and 138,756 is: 207,988.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,660.64 : 444,679.92 = 138,756 : x
  2. Step 2: Convert to fraction form
    296,660.64/444,679.92 = 138,756/x
  3. Step 3: Cross multiply
    296,660.64x = 444,679.92 × 138,756
  4. Step 4: Simplify right side
    296,660.64x = 61,702,006,979.52
  5. Step 5: Solve for x
    x = 61,702,006,979.52/296,660.64
  6. Step 6: Final answer
    x = 207,988.52

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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.