Home / 212,974.38-319,427.68-70,807.86

Finding the Fourth Proportional to 212,974.38, 319,427.68 and 70,807.86

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Solution

The fourth proportional to 212,974.38, 319,427.68 and 70,807.86 is: 106,200.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,974.38 : 319,427.68 = 70,807.86 : x
  2. Step 2: Convert to fraction form
    212,974.38/319,427.68 = 70,807.86/x
  3. Step 3: Cross multiply
    212,974.38x = 319,427.68 × 70,807.86
  4. Step 4: Simplify right side
    212,974.38x = 22,617,990,445.56
  5. Step 5: Solve for x
    x = 22,617,990,445.56/212,974.38
  6. Step 6: Final answer
    x = 106,200.52

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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.