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Finding the Fourth Proportional to 311,272.40, 466,966.20 and 100,917.20

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Solution

The fourth proportional to 311,272.40, 466,966.20 and 100,917.20 is: 151,394.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,272.40 : 466,966.20 = 100,917.20 : x
  2. Step 2: Convert to fraction form
    311,272.40/466,966.20 = 100,917.20/x
  3. Step 3: Cross multiply
    311,272.40x = 466,966.20 × 100,917.20
  4. Step 4: Simplify right side
    311,272.40x = 47,124,921,398.64
  5. Step 5: Solve for x
    x = 47,124,921,398.64/311,272.40
  6. Step 6: Final answer
    x = 151,394.47

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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.