Home / 320,931.31-442,899.05-177,691.35

Finding the Fourth Proportional to 320,931.31, 442,899.05 and 177,691.35

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Solution

The fourth proportional to 320,931.31, 442,899.05 and 177,691.35 is: 245,221.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,931.31 : 442,899.05 = 177,691.35 : x
  2. Step 2: Convert to fraction form
    320,931.31/442,899.05 = 177,691.35/x
  3. Step 3: Cross multiply
    320,931.31x = 442,899.05 × 177,691.35
  4. Step 4: Simplify right side
    320,931.31x = 78,699,330,108.22
  5. Step 5: Solve for x
    x = 78,699,330,108.22/320,931.31
  6. Step 6: Final answer
    x = 245,221.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.