Home / 354,155.28-531,285.20-126,433.24

Finding the Fourth Proportional to 354,155.28, 531,285.20 and 126,433.24

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Solution

The fourth proportional to 354,155.28, 531,285.20 and 126,433.24 is: 189,668.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,155.28 : 531,285.20 = 126,433.24 : x
  2. Step 2: Convert to fraction form
    354,155.28/531,285.20 = 126,433.24/x
  3. Step 3: Cross multiply
    354,155.28x = 531,285.20 × 126,433.24
  4. Step 4: Simplify right side
    354,155.28x = 67,172,109,200.05
  5. Step 5: Solve for x
    x = 67,172,109,200.05/354,155.28
  6. Step 6: Final answer
    x = 189,668.52

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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.