Home / 438,922.60-657,989.70-172,864.60

Finding the Fourth Proportional to 438,922.60, 657,989.70 and 172,864.60

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Solution

The fourth proportional to 438,922.60, 657,989.70 and 172,864.60 is: 259,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,922.60 : 657,989.70 = 172,864.60 : x
  2. Step 2: Convert to fraction form
    438,922.60/657,989.70 = 172,864.60/x
  3. Step 3: Cross multiply
    438,922.60x = 657,989.70 × 172,864.60
  4. Step 4: Simplify right side
    438,922.60x = 113,743,126,294.62
  5. Step 5: Solve for x
    x = 113,743,126,294.62/438,922.60
  6. Step 6: Final answer
    x = 259,141.65

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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.