Home / 283,140.17-390,733.50-155,815.76

Finding the Fourth Proportional to 283,140.17, 390,733.50 and 155,815.76

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Solution

The fourth proportional to 283,140.17, 390,733.50 and 155,815.76 is: 215,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,140.17 : 390,733.50 = 155,815.76 : x
  2. Step 2: Convert to fraction form
    283,140.17/390,733.50 = 155,815.76/x
  3. Step 3: Cross multiply
    283,140.17x = 390,733.50 × 155,815.76
  4. Step 4: Simplify right side
    283,140.17x = 60,882,435,306.29
  5. Step 5: Solve for x
    x = 60,882,435,306.29/283,140.17
  6. Step 6: Final answer
    x = 215,025.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.