Home / 218,962.33-328,415.19-69,217.72

Finding the Fourth Proportional to 218,962.33, 328,415.19 and 69,217.72

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Solution

The fourth proportional to 218,962.33, 328,415.19 and 69,217.72 is: 103,817.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,962.33 : 328,415.19 = 69,217.72 : x
  2. Step 2: Convert to fraction form
    218,962.33/328,415.19 = 69,217.72/x
  3. Step 3: Cross multiply
    218,962.33x = 328,415.19 × 69,217.72
  4. Step 4: Simplify right side
    218,962.33x = 22,732,150,665.17
  5. Step 5: Solve for x
    x = 22,732,150,665.17/218,962.33
  6. Step 6: Final answer
    x = 103,817.63

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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.