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Finding the Fourth Proportional to 218,547.40, 327,821.10 and 192,886.60

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Solution

The fourth proportional to 218,547.40, 327,821.10 and 192,886.60 is: 289,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,547.40 : 327,821.10 = 192,886.60 : x
  2. Step 2: Convert to fraction form
    218,547.40/327,821.10 = 192,886.60/x
  3. Step 3: Cross multiply
    218,547.40x = 327,821.10 × 192,886.60
  4. Step 4: Simplify right side
    218,547.40x = 63,232,297,387.26
  5. Step 5: Solve for x
    x = 63,232,297,387.26/218,547.40
  6. Step 6: Final answer
    x = 289,329.90

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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.