Home / 212,843.76-319,050.04-138,011.38

Finding the Fourth Proportional to 212,843.76, 319,050.04 and 138,011.38

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Solution

The fourth proportional to 212,843.76, 319,050.04 and 138,011.38 is: 206,877.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,843.76 : 319,050.04 = 138,011.38 : x
  2. Step 2: Convert to fraction form
    212,843.76/319,050.04 = 138,011.38/x
  3. Step 3: Cross multiply
    212,843.76x = 319,050.04 × 138,011.38
  4. Step 4: Simplify right side
    212,843.76x = 44,032,536,309.46
  5. Step 5: Solve for x
    x = 44,032,536,309.46/212,843.76
  6. Step 6: Final answer
    x = 206,877.27

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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.