Home / 426,734.57-639,961.15-142,346.75

Finding the Fourth Proportional to 426,734.57, 639,961.15 and 142,346.75

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Solution

The fourth proportional to 426,734.57, 639,961.15 and 142,346.75 is: 213,473.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,734.57 : 639,961.15 = 142,346.75 : x
  2. Step 2: Convert to fraction form
    426,734.57/639,961.15 = 142,346.75/x
  3. Step 3: Cross multiply
    426,734.57x = 639,961.15 × 142,346.75
  4. Step 4: Simplify right side
    426,734.57x = 91,096,389,117.03
  5. Step 5: Solve for x
    x = 91,096,389,117.03/426,734.57
  6. Step 6: Final answer
    x = 213,473.19

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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.