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Finding the Fourth Proportional to 252,226.05, 378,215.10 and 83,689.13

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Solution

The fourth proportional to 252,226.05, 378,215.10 and 83,689.13 is: 125,492.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,226.05 : 378,215.10 = 83,689.13 : x
  2. Step 2: Convert to fraction form
    252,226.05/378,215.10 = 83,689.13/x
  3. Step 3: Cross multiply
    252,226.05x = 378,215.10 × 83,689.13
  4. Step 4: Simplify right side
    252,226.05x = 31,652,490,780.79
  5. Step 5: Solve for x
    x = 31,652,490,780.79/252,226.05
  6. Step 6: Final answer
    x = 125,492.55

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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.