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Finding the Fourth Proportional to 218,873.34, 328,292.73 and 69,118.11

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Solution

The fourth proportional to 218,873.34, 328,292.73 and 69,118.11 is: 103,671.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,873.34 : 328,292.73 = 69,118.11 : x
  2. Step 2: Convert to fraction form
    218,873.34/328,292.73 = 69,118.11/x
  3. Step 3: Cross multiply
    218,873.34x = 328,292.73 × 69,118.11
  4. Step 4: Simplify right side
    218,873.34x = 22,690,973,024.34
  5. Step 5: Solve for x
    x = 22,690,973,024.34/218,873.34
  6. Step 6: Final answer
    x = 103,671.71

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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.