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Finding the Fourth Proportional to 205,010.88, 307,631.15 and 86,770.73

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Solution

The fourth proportional to 205,010.88, 307,631.15 and 86,770.73 is: 130,204.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,010.88 : 307,631.15 = 86,770.73 : x
  2. Step 2: Convert to fraction form
    205,010.88/307,631.15 = 86,770.73/x
  3. Step 3: Cross multiply
    205,010.88x = 307,631.15 × 86,770.73
  4. Step 4: Simplify right side
    205,010.88x = 26,693,377,484.23
  5. Step 5: Solve for x
    x = 26,693,377,484.23/205,010.88
  6. Step 6: Final answer
    x = 130,204.69

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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.