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Finding the Fourth Proportional to 311,309.40, 466,964.10 and 153,845.40

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Solution

The fourth proportional to 311,309.40, 466,964.10 and 153,845.40 is: 230,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,309.40 : 466,964.10 = 153,845.40 : x
  2. Step 2: Convert to fraction form
    311,309.40/466,964.10 = 153,845.40/x
  3. Step 3: Cross multiply
    311,309.40x = 466,964.10 × 153,845.40
  4. Step 4: Simplify right side
    311,309.40x = 71,840,278,750.14
  5. Step 5: Solve for x
    x = 71,840,278,750.14/311,309.40
  6. Step 6: Final answer
    x = 230,768.10

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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.