Home / 386,849.12-580,142.24-134,070.72

Finding the Fourth Proportional to 386,849.12, 580,142.24 and 134,070.72

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Solution

The fourth proportional to 386,849.12, 580,142.24 and 134,070.72 is: 201,060.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,849.12 : 580,142.24 = 134,070.72 : x
  2. Step 2: Convert to fraction form
    386,849.12/580,142.24 = 134,070.72/x
  3. Step 3: Cross multiply
    386,849.12x = 580,142.24 × 134,070.72
  4. Step 4: Simplify right side
    386,849.12x = 77,780,087,819.21
  5. Step 5: Solve for x
    x = 77,780,087,819.21/386,849.12
  6. Step 6: Final answer
    x = 201,060.53

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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.