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Finding the Fourth Proportional to 252,271.25, 378,342.29 and 74,736.74

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Solution

The fourth proportional to 252,271.25, 378,342.29 and 74,736.74 is: 112,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,271.25 : 378,342.29 = 74,736.74 : x
  2. Step 2: Convert to fraction form
    252,271.25/378,342.29 = 74,736.74/x
  3. Step 3: Cross multiply
    252,271.25x = 378,342.29 × 74,736.74
  4. Step 4: Simplify right side
    252,271.25x = 28,276,068,422.36
  5. Step 5: Solve for x
    x = 28,276,068,422.36/252,271.25
  6. Step 6: Final answer
    x = 112,085.97

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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.