Home / 408,920.28-613,438.02-142,641.96

Finding the Fourth Proportional to 408,920.28, 613,438.02 and 142,641.96

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Solution

The fourth proportional to 408,920.28, 613,438.02 and 142,641.96 is: 213,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,920.28 : 613,438.02 = 142,641.96 : x
  2. Step 2: Convert to fraction form
    408,920.28/613,438.02 = 142,641.96/x
  3. Step 3: Cross multiply
    408,920.28x = 613,438.02 × 142,641.96
  4. Step 4: Simplify right side
    408,920.28x = 87,502,001,511.32
  5. Step 5: Solve for x
    x = 87,502,001,511.32/408,920.28
  6. Step 6: Final answer
    x = 213,983.03

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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.