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Finding the Fourth Proportional to 252,685.98, 378,700.20 and 102,751.44

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Solution

The fourth proportional to 252,685.98, 378,700.20 and 102,751.44 is: 153,993.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,685.98 : 378,700.20 = 102,751.44 : x
  2. Step 2: Convert to fraction form
    252,685.98/378,700.20 = 102,751.44/x
  3. Step 3: Cross multiply
    252,685.98x = 378,700.20 × 102,751.44
  4. Step 4: Simplify right side
    252,685.98x = 38,911,990,878.29
  5. Step 5: Solve for x
    x = 38,911,990,878.29/252,685.98
  6. Step 6: Final answer
    x = 153,993.47

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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.