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Finding the Fourth Proportional to 218,822.51, 328,233.72 and 69,167.87

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Solution

The fourth proportional to 218,822.51, 328,233.72 and 69,167.87 is: 103,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,822.51 : 328,233.72 = 69,167.87 : x
  2. Step 2: Convert to fraction form
    218,822.51/328,233.72 = 69,167.87/x
  3. Step 3: Cross multiply
    218,822.51x = 328,233.72 × 69,167.87
  4. Step 4: Simplify right side
    218,822.51x = 22,703,228,095.16
  5. Step 5: Solve for x
    x = 22,703,228,095.16/218,822.51
  6. Step 6: Final answer
    x = 103,751.80

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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.