Home / 212,917.10-319,260.45-88,270.70

Finding the Fourth Proportional to 212,917.10, 319,260.45 and 88,270.70

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Solution

The fourth proportional to 212,917.10, 319,260.45 and 88,270.70 is: 132,358.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,917.10 : 319,260.45 = 88,270.70 : x
  2. Step 2: Convert to fraction form
    212,917.10/319,260.45 = 88,270.70/x
  3. Step 3: Cross multiply
    212,917.10x = 319,260.45 × 88,270.70
  4. Step 4: Simplify right side
    212,917.10x = 28,181,343,403.82
  5. Step 5: Solve for x
    x = 28,181,343,403.82/212,917.10
  6. Step 6: Final answer
    x = 132,358.29

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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.