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Finding the Fourth Proportional to 483,672.88, 725,508.18 and 128,686.96

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Solution

The fourth proportional to 483,672.88, 725,508.18 and 128,686.96 is: 193,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,672.88 : 725,508.18 = 128,686.96 : x
  2. Step 2: Convert to fraction form
    483,672.88/725,508.18 = 128,686.96/x
  3. Step 3: Cross multiply
    483,672.88x = 725,508.18 × 128,686.96
  4. Step 4: Simplify right side
    483,672.88x = 93,363,442,139.33
  5. Step 5: Solve for x
    x = 93,363,442,139.33/483,672.88
  6. Step 6: Final answer
    x = 193,030.14

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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.