Home / 212,918.20-319,377.30-100,561.48

Finding the Fourth Proportional to 212,918.20, 319,377.30 and 100,561.48

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Solution

The fourth proportional to 212,918.20, 319,377.30 and 100,561.48 is: 150,842.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,918.20 : 319,377.30 = 100,561.48 : x
  2. Step 2: Convert to fraction form
    212,918.20/319,377.30 = 100,561.48/x
  3. Step 3: Cross multiply
    212,918.20x = 319,377.30 × 100,561.48
  4. Step 4: Simplify right side
    212,918.20x = 32,117,053,966.40
  5. Step 5: Solve for x
    x = 32,117,053,966.40/212,918.20
  6. Step 6: Final answer
    x = 150,842.22

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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.