Home / 218,960.33-328,412.19-69,215.72

Finding the Fourth Proportional to 218,960.33, 328,412.19 and 69,215.72

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Solution

The fourth proportional to 218,960.33, 328,412.19 and 69,215.72 is: 103,814.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,960.33 : 328,412.19 = 69,215.72 : x
  2. Step 2: Convert to fraction form
    218,960.33/328,412.19 = 69,215.72/x
  3. Step 3: Cross multiply
    218,960.33x = 328,412.19 × 69,215.72
  4. Step 4: Simplify right side
    218,960.33x = 22,731,287,008.66
  5. Step 5: Solve for x
    x = 22,731,287,008.66/218,960.33
  6. Step 6: Final answer
    x = 103,814.64

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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.