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Finding the Fourth Proportional to 252,501.06, 378,686.79 and 74,966.88

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Solution

The fourth proportional to 252,501.06, 378,686.79 and 74,966.88 is: 112,431.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,501.06 : 378,686.79 = 74,966.88 : x
  2. Step 2: Convert to fraction form
    252,501.06/378,686.79 = 74,966.88/x
  3. Step 3: Cross multiply
    252,501.06x = 378,686.79 × 74,966.88
  4. Step 4: Simplify right side
    252,501.06x = 28,388,967,143.52
  5. Step 5: Solve for x
    x = 28,388,967,143.52/252,501.06
  6. Step 6: Final answer
    x = 112,431.08

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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.