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Finding the Fourth Proportional to 218,818.40, 328,227.60 and 187,325.60

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Solution

The fourth proportional to 218,818.40, 328,227.60 and 187,325.60 is: 280,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,818.40 : 328,227.60 = 187,325.60 : x
  2. Step 2: Convert to fraction form
    218,818.40/328,227.60 = 187,325.60/x
  3. Step 3: Cross multiply
    218,818.40x = 328,227.60 × 187,325.60
  4. Step 4: Simplify right side
    218,818.40x = 61,485,432,106.56
  5. Step 5: Solve for x
    x = 61,485,432,106.56/218,818.40
  6. Step 6: Final answer
    x = 280,988.40

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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.