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Finding the Fourth Proportional to 280,164.60, 420,246.90 and 191,591.10

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Solution

The fourth proportional to 280,164.60, 420,246.90 and 191,591.10 is: 287,386.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,164.60 : 420,246.90 = 191,591.10 : x
  2. Step 2: Convert to fraction form
    280,164.60/420,246.90 = 191,591.10/x
  3. Step 3: Cross multiply
    280,164.60x = 420,246.90 × 191,591.10
  4. Step 4: Simplify right side
    280,164.60x = 80,515,565,842.59
  5. Step 5: Solve for x
    x = 80,515,565,842.59/280,164.60
  6. Step 6: Final answer
    x = 287,386.65

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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.