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Finding the Fourth Proportional to 239,514.80, 359,401.80 and 99,287.60

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Solution

The fourth proportional to 239,514.80, 359,401.80 and 99,287.60 is: 148,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,514.80 : 359,401.80 = 99,287.60 : x
  2. Step 2: Convert to fraction form
    239,514.80/359,401.80 = 99,287.60/x
  3. Step 3: Cross multiply
    239,514.80x = 359,401.80 × 99,287.60
  4. Step 4: Simplify right side
    239,514.80x = 35,684,142,157.68
  5. Step 5: Solve for x
    x = 35,684,142,157.68/239,514.80
  6. Step 6: Final answer
    x = 148,985.12

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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.