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Finding the Fourth Proportional to 252,272.64, 378,445.68 and 74,756.64

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Solution

The fourth proportional to 252,272.64, 378,445.68 and 74,756.64 is: 112,145.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,272.64 : 378,445.68 = 74,756.64 : x
  2. Step 2: Convert to fraction form
    252,272.64/378,445.68 = 74,756.64/x
  3. Step 3: Cross multiply
    252,272.64x = 378,445.68 × 74,756.64
  4. Step 4: Simplify right side
    252,272.64x = 28,291,327,459.32
  5. Step 5: Solve for x
    x = 28,291,327,459.32/252,272.64
  6. Step 6: Final answer
    x = 112,145.84

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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.