Home / 438,931.60-658,003.20-172,873.60

Finding the Fourth Proportional to 438,931.60, 658,003.20 and 172,873.60

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Solution

The fourth proportional to 438,931.60, 658,003.20 and 172,873.60 is: 259,155.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,931.60 : 658,003.20 = 172,873.60 : x
  2. Step 2: Convert to fraction form
    438,931.60/658,003.20 = 172,873.60/x
  3. Step 3: Cross multiply
    438,931.60x = 658,003.20 × 172,873.60
  4. Step 4: Simplify right side
    438,931.60x = 113,751,381,995.52
  5. Step 5: Solve for x
    x = 113,751,381,995.52/438,931.60
  6. Step 6: Final answer
    x = 259,155.14

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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.