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Finding the Fourth Proportional to 280,293.66, 420,383.97 and 80,567.10

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Solution

The fourth proportional to 280,293.66, 420,383.97 and 80,567.10 is: 120,834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,293.66 : 420,383.97 = 80,567.10 : x
  2. Step 2: Convert to fraction form
    280,293.66/420,383.97 = 80,567.10/x
  3. Step 3: Cross multiply
    280,293.66x = 420,383.97 × 80,567.10
  4. Step 4: Simplify right side
    280,293.66x = 33,869,117,349.39
  5. Step 5: Solve for x
    x = 33,869,117,349.39/280,293.66
  6. Step 6: Final answer
    x = 120,834.40

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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.