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Finding the Fourth Proportional to 311,278.60, 466,917.90 and 100,913.80

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Solution

The fourth proportional to 311,278.60, 466,917.90 and 100,913.80 is: 151,370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,278.60 : 466,917.90 = 100,913.80 : x
  2. Step 2: Convert to fraction form
    311,278.60/466,917.90 = 100,913.80/x
  3. Step 3: Cross multiply
    311,278.60x = 466,917.90 × 100,913.80
  4. Step 4: Simplify right side
    311,278.60x = 47,118,459,577.02
  5. Step 5: Solve for x
    x = 47,118,459,577.02/311,278.60
  6. Step 6: Final answer
    x = 151,370.70

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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.