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Finding the Fourth Proportional to 218,744.40, 328,116.60 and 148,760.40

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Solution

The fourth proportional to 218,744.40, 328,116.60 and 148,760.40 is: 223,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,744.40 : 328,116.60 = 148,760.40 : x
  2. Step 2: Convert to fraction form
    218,744.40/328,116.60 = 148,760.40/x
  3. Step 3: Cross multiply
    218,744.40x = 328,116.60 × 148,760.40
  4. Step 4: Simplify right side
    218,744.40x = 48,810,756,662.64
  5. Step 5: Solve for x
    x = 48,810,756,662.64/218,744.40
  6. Step 6: Final answer
    x = 223,140.60

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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.