Home / 320,931.85-442,899.79-177,691.89

Finding the Fourth Proportional to 320,931.85, 442,899.79 and 177,691.89

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Solution

The fourth proportional to 320,931.85, 442,899.79 and 177,691.89 is: 245,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,931.85 : 442,899.79 = 177,691.89 : x
  2. Step 2: Convert to fraction form
    320,931.85/442,899.79 = 177,691.89/x
  3. Step 3: Cross multiply
    320,931.85x = 442,899.79 × 177,691.89
  4. Step 4: Simplify right side
    320,931.85x = 78,699,700,765.70
  5. Step 5: Solve for x
    x = 78,699,700,765.70/320,931.85
  6. Step 6: Final answer
    x = 245,222.47

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1.5x scale

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.