Home / 393,953.22-591,225.48-280,086.66

Finding the Fourth Proportional to 393,953.22, 591,225.48 and 280,086.66

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Solution

The fourth proportional to 393,953.22, 591,225.48 and 280,086.66 is: 420,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,953.22 : 591,225.48 = 280,086.66 : x
  2. Step 2: Convert to fraction form
    393,953.22/591,225.48 = 280,086.66/x
  3. Step 3: Cross multiply
    393,953.22x = 591,225.48 × 280,086.66
  4. Step 4: Simplify right side
    393,953.22x = 165,594,370,000.10
  5. Step 5: Solve for x
    x = 165,594,370,000.10/393,953.22
  6. Step 6: Final answer
    x = 420,340.19

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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.