Home / 280,556.28-420,834.24-70,194.06

Finding the Fourth Proportional to 280,556.28, 420,834.24 and 70,194.06

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Solution

The fourth proportional to 280,556.28, 420,834.24 and 70,194.06 is: 105,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,556.28 : 420,834.24 = 70,194.06 : x
  2. Step 2: Convert to fraction form
    280,556.28/420,834.24 = 70,194.06/x
  3. Step 3: Cross multiply
    280,556.28x = 420,834.24 × 70,194.06
  4. Step 4: Simplify right side
    280,556.28x = 29,540,063,892.61
  5. Step 5: Solve for x
    x = 29,540,063,892.61/280,556.28
  6. Step 6: Final answer
    x = 105,291.04

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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.