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Finding the Fourth Proportional to 252,369.64, 378,087.90 and 127,412.20

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Solution

The fourth proportional to 252,369.64, 378,087.90 and 127,412.20 is: 190,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,369.64 : 378,087.90 = 127,412.20 : x
  2. Step 2: Convert to fraction form
    252,369.64/378,087.90 = 127,412.20/x
  3. Step 3: Cross multiply
    252,369.64x = 378,087.90 × 127,412.20
  4. Step 4: Simplify right side
    252,369.64x = 48,173,011,132.38
  5. Step 5: Solve for x
    x = 48,173,011,132.38/252,369.64
  6. Step 6: Final answer
    x = 190,882.75

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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.