Home / 287,633,182.80-431,449,774.20-126,390,046.80

Finding the Fourth Proportional to 287,633,182.80, 431,449,774.20 and 126,390,046.80

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Solution

The fourth proportional to 287,633,182.80, 431,449,774.20 and 126,390,046.80 is: 189,585,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,633,182.80 : 431,449,774.20 = 126,390,046.80 : x
  2. Step 2: Convert to fraction form
    287,633,182.80/431,449,774.20 = 126,390,046.80/x
  3. Step 3: Cross multiply
    287,633,182.80x = 431,449,774.20 × 126,390,046.80
  4. Step 4: Simplify right side
    287,633,182.80x = 54,530,957,152,987,432
  5. Step 5: Solve for x
    x = 54,530,957,152,987,432/287,633,182.80
  6. Step 6: Final answer
    x = 189,585,070.20

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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.