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Finding the Fourth Proportional to 239,610.40, 359,350.80 and 71,130.40

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Solution

The fourth proportional to 239,610.40, 359,350.80 and 71,130.40 is: 106,676.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,610.40 : 359,350.80 = 71,130.40 : x
  2. Step 2: Convert to fraction form
    239,610.40/359,350.80 = 71,130.40/x
  3. Step 3: Cross multiply
    239,610.40x = 359,350.80 × 71,130.40
  4. Step 4: Simplify right side
    239,610.40x = 25,560,766,144.32
  5. Step 5: Solve for x
    x = 25,560,766,144.32/239,610.40
  6. Step 6: Final answer
    x = 106,676.36

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1.5x scale

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.