Home / 448,005.28-672,139.16-132,470.40

Finding the Fourth Proportional to 448,005.28, 672,139.16 and 132,470.40

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Solution

The fourth proportional to 448,005.28, 672,139.16 and 132,470.40 is: 198,744.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,005.28 : 672,139.16 = 132,470.40 : x
  2. Step 2: Convert to fraction form
    448,005.28/672,139.16 = 132,470.40/x
  3. Step 3: Cross multiply
    448,005.28x = 672,139.16 × 132,470.40
  4. Step 4: Simplify right side
    448,005.28x = 89,038,543,380.86
  5. Step 5: Solve for x
    x = 89,038,543,380.86/448,005.28
  6. Step 6: Final answer
    x = 198,744.41

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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.