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Finding the Fourth Proportional to 311,319.60, 466,979.40 and 185,348.40

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Solution

The fourth proportional to 311,319.60, 466,979.40 and 185,348.40 is: 278,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,319.60 : 466,979.40 = 185,348.40 : x
  2. Step 2: Convert to fraction form
    311,319.60/466,979.40 = 185,348.40/x
  3. Step 3: Cross multiply
    311,319.60x = 466,979.40 × 185,348.40
  4. Step 4: Simplify right side
    311,319.60x = 86,553,884,622.96
  5. Step 5: Solve for x
    x = 86,553,884,622.96/311,319.60
  6. Step 6: Final answer
    x = 278,022.60

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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.