Home / 218,977.70-328,438.31-69,233.20

Finding the Fourth Proportional to 218,977.70, 328,438.31 and 69,233.20

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Solution

The fourth proportional to 218,977.70, 328,438.31 and 69,233.20 is: 103,840.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,977.70 : 328,438.31 = 69,233.20 : x
  2. Step 2: Convert to fraction form
    218,977.70/328,438.31 = 69,233.20/x
  3. Step 3: Cross multiply
    218,977.70x = 328,438.31 × 69,233.20
  4. Step 4: Simplify right side
    218,977.70x = 22,738,835,203.89
  5. Step 5: Solve for x
    x = 22,738,835,203.89/218,977.70
  6. Step 6: Final answer
    x = 103,840.87

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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.