Home / 438,230.60-656,892.30-238,128.20

Finding the Fourth Proportional to 438,230.60, 656,892.30 and 238,128.20

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Solution

The fourth proportional to 438,230.60, 656,892.30 and 238,128.20 is: 356,945.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,230.60 : 656,892.30 = 238,128.20 : x
  2. Step 2: Convert to fraction form
    438,230.60/656,892.30 = 238,128.20/x
  3. Step 3: Cross multiply
    438,230.60x = 656,892.30 × 238,128.20
  4. Step 4: Simplify right side
    438,230.60x = 156,424,580,992.86
  5. Step 5: Solve for x
    x = 156,424,580,992.86/438,230.60
  6. Step 6: Final answer
    x = 356,945.82

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1.5x scale

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.