Home / 320,531.76-442,304.07-177,288.72

Finding the Fourth Proportional to 320,531.76, 442,304.07 and 177,288.72

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Solution

The fourth proportional to 320,531.76, 442,304.07 and 177,288.72 is: 244,641.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,531.76 : 442,304.07 = 177,288.72 : x
  2. Step 2: Convert to fraction form
    320,531.76/442,304.07 = 177,288.72/x
  3. Step 3: Cross multiply
    320,531.76x = 442,304.07 × 177,288.72
  4. Step 4: Simplify right side
    320,531.76x = 78,415,522,421.09
  5. Step 5: Solve for x
    x = 78,415,522,421.09/320,531.76
  6. Step 6: Final answer
    x = 244,641.97

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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.