Home / 263,587.20-395,380.80-121,432.20

Finding the Fourth Proportional to 263,587.20, 395,380.80 and 121,432.20

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Solution

The fourth proportional to 263,587.20, 395,380.80 and 121,432.20 is: 182,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,587.20 : 395,380.80 = 121,432.20 : x
  2. Step 2: Convert to fraction form
    263,587.20/395,380.80 = 121,432.20/x
  3. Step 3: Cross multiply
    263,587.20x = 395,380.80 × 121,432.20
  4. Step 4: Simplify right side
    263,587.20x = 48,011,960,381.76
  5. Step 5: Solve for x
    x = 48,011,960,381.76/263,587.20
  6. Step 6: Final answer
    x = 182,148.30

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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.