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Finding the Fourth Proportional to 311,357.04, 466,990.20 and 100,964.40

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Solution

The fourth proportional to 311,357.04, 466,990.20 and 100,964.40 is: 151,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,357.04 : 466,990.20 = 100,964.40 : x
  2. Step 2: Convert to fraction form
    311,357.04/466,990.20 = 100,964.40/x
  3. Step 3: Cross multiply
    311,357.04x = 466,990.20 × 100,964.40
  4. Step 4: Simplify right side
    311,357.04x = 47,149,385,348.88
  5. Step 5: Solve for x
    x = 47,149,385,348.88/311,357.04
  6. Step 6: Final answer
    x = 151,431.89

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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.