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Finding the Fourth Proportional to 252,275.55, 378,459.96 and 72,353.44

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Solution

The fourth proportional to 252,275.55, 378,459.96 and 72,353.44 is: 108,543.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,275.55 : 378,459.96 = 72,353.44 : x
  2. Step 2: Convert to fraction form
    252,275.55/378,459.96 = 72,353.44/x
  3. Step 3: Cross multiply
    252,275.55x = 378,459.96 × 72,353.44
  4. Step 4: Simplify right side
    252,275.55x = 27,382,880,008.26
  5. Step 5: Solve for x
    x = 27,382,880,008.26/252,275.55
  6. Step 6: Final answer
    x = 108,543.54

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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.