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Finding the Fourth Proportional to 252,300.84, 378,398.88 and 74,766.12

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Solution

The fourth proportional to 252,300.84, 378,398.88 and 74,766.12 is: 112,133.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,300.84 : 378,398.88 = 74,766.12 : x
  2. Step 2: Convert to fraction form
    252,300.84/378,398.88 = 74,766.12/x
  3. Step 3: Cross multiply
    252,300.84x = 378,398.88 × 74,766.12
  4. Step 4: Simplify right side
    252,300.84x = 28,291,416,069.95
  5. Step 5: Solve for x
    x = 28,291,416,069.95/252,300.84
  6. Step 6: Final answer
    x = 112,133.66

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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.