Home / 279,491,520.96-419,312,752.20-85,397,632.56

Finding the Fourth Proportional to 279,491,520.96, 419,312,752.20 and 85,397,632.56

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Solution

The fourth proportional to 279,491,520.96, 419,312,752.20 and 85,397,632.56 is: 128,119,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,491,520.96 : 419,312,752.20 = 85,397,632.56 : x
  2. Step 2: Convert to fraction form
    279,491,520.96/419,312,752.20 = 85,397,632.56/x
  3. Step 3: Cross multiply
    279,491,520.96x = 419,312,752.20 × 85,397,632.56
  4. Step 4: Simplify right side
    279,491,520.96x = 35,808,316,340,097,932
  5. Step 5: Solve for x
    x = 35,808,316,340,097,932/279,491,520.96
  6. Step 6: Final answer
    x = 128,119,508.66

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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.