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Finding the Fourth Proportional to 239,377.68, 359,109.48 and 99,147.12

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Solution

The fourth proportional to 239,377.68, 359,109.48 and 99,147.12 is: 148,738.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,377.68 : 359,109.48 = 99,147.12 : x
  2. Step 2: Convert to fraction form
    239,377.68/359,109.48 = 99,147.12/x
  3. Step 3: Cross multiply
    239,377.68x = 359,109.48 × 99,147.12
  4. Step 4: Simplify right side
    239,377.68x = 35,604,670,706.70
  5. Step 5: Solve for x
    x = 35,604,670,706.70/239,377.68
  6. Step 6: Final answer
    x = 148,738.47

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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.