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Finding the Fourth Proportional to 252,510.88, 378,766.32 and 86,300.32

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Solution

The fourth proportional to 252,510.88, 378,766.32 and 86,300.32 is: 129,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,510.88 : 378,766.32 = 86,300.32 : x
  2. Step 2: Convert to fraction form
    252,510.88/378,766.32 = 86,300.32/x
  3. Step 3: Cross multiply
    252,510.88x = 378,766.32 × 86,300.32
  4. Step 4: Simplify right side
    252,510.88x = 32,687,654,621.22
  5. Step 5: Solve for x
    x = 32,687,654,621.22/252,510.88
  6. Step 6: Final answer
    x = 129,450.48

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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.