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Finding the Fourth Proportional to 218,864.40, 328,296.60 and 148,880.40

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Solution

The fourth proportional to 218,864.40, 328,296.60 and 148,880.40 is: 223,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,864.40 : 328,296.60 = 148,880.40 : x
  2. Step 2: Convert to fraction form
    218,864.40/328,296.60 = 148,880.40/x
  3. Step 3: Cross multiply
    218,864.40x = 328,296.60 × 148,880.40
  4. Step 4: Simplify right side
    218,864.40x = 48,876,929,126.64
  5. Step 5: Solve for x
    x = 48,876,929,126.64/218,864.40
  6. Step 6: Final answer
    x = 223,320.60

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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.