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Finding the Fourth Proportional to 252,415.72, 378,423.66 and 125,990.92

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Solution

The fourth proportional to 252,415.72, 378,423.66 and 125,990.92 is: 188,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,415.72 : 378,423.66 = 125,990.92 : x
  2. Step 2: Convert to fraction form
    252,415.72/378,423.66 = 125,990.92/x
  3. Step 3: Cross multiply
    252,415.72x = 378,423.66 × 125,990.92
  4. Step 4: Simplify right side
    252,415.72x = 47,677,945,073.17
  5. Step 5: Solve for x
    x = 47,677,945,073.17/252,415.72
  6. Step 6: Final answer
    x = 188,886.59

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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.