Home / 212,039.19-318,057.98-54,267.39

Finding the Fourth Proportional to 212,039.19, 318,057.98 and 54,267.39

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Solution

The fourth proportional to 212,039.19, 318,057.98 and 54,267.39 is: 81,400.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,039.19 : 318,057.98 = 54,267.39 : x
  2. Step 2: Convert to fraction form
    212,039.19/318,057.98 = 54,267.39/x
  3. Step 3: Cross multiply
    212,039.19x = 318,057.98 × 54,267.39
  4. Step 4: Simplify right side
    212,039.19x = 17,260,176,171.94
  5. Step 5: Solve for x
    x = 17,260,176,171.94/212,039.19
  6. Step 6: Final answer
    x = 81,400.88

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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.