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Finding the Fourth Proportional to 252,522.65, 378,713.90 and 70,111.55

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Solution

The fourth proportional to 252,522.65, 378,713.90 and 70,111.55 is: 105,147.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,522.65 : 378,713.90 = 70,111.55 : x
  2. Step 2: Convert to fraction form
    252,522.65/378,713.90 = 70,111.55/x
  3. Step 3: Cross multiply
    252,522.65x = 378,713.90 × 70,111.55
  4. Step 4: Simplify right side
    252,522.65x = 26,552,219,657.61
  5. Step 5: Solve for x
    x = 26,552,219,657.61/252,522.65
  6. Step 6: Final answer
    x = 105,147.87

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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.