Home / 280,566.57-420,849.92-70,204.57

Finding the Fourth Proportional to 280,566.57, 420,849.92 and 70,204.57

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Solution

The fourth proportional to 280,566.57, 420,849.92 and 70,204.57 is: 105,306.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,566.57 : 420,849.92 = 70,204.57 : x
  2. Step 2: Convert to fraction form
    280,566.57/420,849.92 = 70,204.57/x
  3. Step 3: Cross multiply
    280,566.57x = 420,849.92 × 70,204.57
  4. Step 4: Simplify right side
    280,566.57x = 29,545,587,668.13
  5. Step 5: Solve for x
    x = 29,545,587,668.13/280,566.57
  6. Step 6: Final answer
    x = 105,306.87

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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.