Home / 253,682.28-380,567.12-85,218.80

Finding the Fourth Proportional to 253,682.28, 380,567.12 and 85,218.80

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Solution

The fourth proportional to 253,682.28, 380,567.12 and 85,218.80 is: 127,842.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,682.28 : 380,567.12 = 85,218.80 : x
  2. Step 2: Convert to fraction form
    253,682.28/380,567.12 = 85,218.80/x
  3. Step 3: Cross multiply
    253,682.28x = 380,567.12 × 85,218.80
  4. Step 4: Simplify right side
    253,682.28x = 32,431,473,285.86
  5. Step 5: Solve for x
    x = 32,431,473,285.86/253,682.28
  6. Step 6: Final answer
    x = 127,842.88

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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.