Home / 511,405.27-767,138.66-156,422.36

Finding the Fourth Proportional to 511,405.27, 767,138.66 and 156,422.36

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Solution

The fourth proportional to 511,405.27, 767,138.66 and 156,422.36 is: 234,642.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,405.27 : 767,138.66 = 156,422.36 : x
  2. Step 2: Convert to fraction form
    511,405.27/767,138.66 = 156,422.36/x
  3. Step 3: Cross multiply
    511,405.27x = 767,138.66 × 156,422.36
  4. Step 4: Simplify right side
    511,405.27x = 119,997,640,780.17
  5. Step 5: Solve for x
    x = 119,997,640,780.17/511,405.27
  6. Step 6: Final answer
    x = 234,642.95

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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.