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Finding the Fourth Proportional to 316,801.56, 475,203.96 and 80,144.45

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Solution

The fourth proportional to 316,801.56, 475,203.96 and 80,144.45 is: 120,217.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,801.56 : 475,203.96 = 80,144.45 : x
  2. Step 2: Convert to fraction form
    316,801.56/475,203.96 = 80,144.45/x
  3. Step 3: Cross multiply
    316,801.56x = 475,203.96 × 80,144.45
  4. Step 4: Simplify right side
    316,801.56x = 38,084,960,012.02
  5. Step 5: Solve for x
    x = 38,084,960,012.02/316,801.56
  6. Step 6: Final answer
    x = 120,217.08

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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.