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Finding the Fourth Proportional to 218,903.80, 328,614.90 and 217,348.60

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Solution

The fourth proportional to 218,903.80, 328,614.90 and 217,348.60 is: 326,280.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,903.80 : 328,614.90 = 217,348.60 : x
  2. Step 2: Convert to fraction form
    218,903.80/328,614.90 = 217,348.60/x
  3. Step 3: Cross multiply
    218,903.80x = 328,614.90 × 217,348.60
  4. Step 4: Simplify right side
    218,903.80x = 71,423,988,454.14
  5. Step 5: Solve for x
    x = 71,423,988,454.14/218,903.80
  6. Step 6: Final answer
    x = 326,280.26

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1.5x scale

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.