Home / 280,982.89-387,759.45-153,655.75

Finding the Fourth Proportional to 280,982.89, 387,759.45 and 153,655.75

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Solution

The fourth proportional to 280,982.89, 387,759.45 and 153,655.75 is: 212,046.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,982.89 : 387,759.45 = 153,655.75 : x
  2. Step 2: Convert to fraction form
    280,982.89/387,759.45 = 153,655.75/x
  3. Step 3: Cross multiply
    280,982.89x = 387,759.45 × 153,655.75
  4. Step 4: Simplify right side
    280,982.89x = 59,581,469,109.34
  5. Step 5: Solve for x
    x = 59,581,469,109.34/280,982.89
  6. Step 6: Final answer
    x = 212,046.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.