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Finding the Fourth Proportional to 218,927.53, 328,405.12 and 92,544.21

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Solution

The fourth proportional to 218,927.53, 328,405.12 and 92,544.21 is: 138,822.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,927.53 : 328,405.12 = 92,544.21 : x
  2. Step 2: Convert to fraction form
    218,927.53/328,405.12 = 92,544.21/x
  3. Step 3: Cross multiply
    218,927.53x = 328,405.12 × 92,544.21
  4. Step 4: Simplify right side
    218,927.53x = 30,391,992,390.36
  5. Step 5: Solve for x
    x = 30,391,992,390.36/218,927.53
  6. Step 6: Final answer
    x = 138,822.16

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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.