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Finding the Fourth Proportional to 481,214.25, 664,250.90 and 280,010.25

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Solution

The fourth proportional to 481,214.25, 664,250.90 and 280,010.25 is: 386,516.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,214.25 : 664,250.90 = 280,010.25 : x
  2. Step 2: Convert to fraction form
    481,214.25/664,250.90 = 280,010.25/x
  3. Step 3: Cross multiply
    481,214.25x = 664,250.90 × 280,010.25
  4. Step 4: Simplify right side
    481,214.25x = 185,997,059,171.67
  5. Step 5: Solve for x
    x = 185,997,059,171.67/481,214.25
  6. Step 6: Final answer
    x = 386,516.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.