Home / 272,291.42-408,437.31-85,317.50

Finding the Fourth Proportional to 272,291.42, 408,437.31 and 85,317.50

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Solution

The fourth proportional to 272,291.42, 408,437.31 and 85,317.50 is: 127,976.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,291.42 : 408,437.31 = 85,317.50 : x
  2. Step 2: Convert to fraction form
    272,291.42/408,437.31 = 85,317.50/x
  3. Step 3: Cross multiply
    272,291.42x = 408,437.31 × 85,317.50
  4. Step 4: Simplify right side
    272,291.42x = 34,846,850,195.93
  5. Step 5: Solve for x
    x = 34,846,850,195.93/272,291.42
  6. Step 6: Final answer
    x = 127,976.31

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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.