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Finding the Fourth Proportional to 320,750.72, 442,649.88 and 177,510.80

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Solution

The fourth proportional to 320,750.72, 442,649.88 and 177,510.80 is: 244,972.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,750.72 : 442,649.88 = 177,510.80 : x
  2. Step 2: Convert to fraction form
    320,750.72/442,649.88 = 177,510.80/x
  3. Step 3: Cross multiply
    320,750.72x = 442,649.88 × 177,510.80
  4. Step 4: Simplify right side
    320,750.72x = 78,575,134,318.70
  5. Step 5: Solve for x
    x = 78,575,134,318.70/320,750.72
  6. Step 6: Final answer
    x = 244,972.59

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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.