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Finding the Fourth Proportional to 218,770.40, 328,115.10 and 60,966.20

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Solution

The fourth proportional to 218,770.40, 328,115.10 and 60,966.20 is: 91,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,770.40 : 328,115.10 = 60,966.20 : x
  2. Step 2: Convert to fraction form
    218,770.40/328,115.10 = 60,966.20/x
  3. Step 3: Cross multiply
    218,770.40x = 328,115.10 × 60,966.20
  4. Step 4: Simplify right side
    218,770.40x = 20,003,930,809.62
  5. Step 5: Solve for x
    x = 20,003,930,809.62/218,770.40
  6. Step 6: Final answer
    x = 91,438.01

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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.