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Finding the Fourth Proportional to 305,010.59, 420,903.15 and 169,046.85

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Solution

The fourth proportional to 305,010.59, 420,903.15 and 169,046.85 is: 233,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,010.59 : 420,903.15 = 169,046.85 : x
  2. Step 2: Convert to fraction form
    305,010.59/420,903.15 = 169,046.85/x
  3. Step 3: Cross multiply
    305,010.59x = 420,903.15 × 169,046.85
  4. Step 4: Simplify right side
    305,010.59x = 71,152,352,607.04
  5. Step 5: Solve for x
    x = 71,152,352,607.04/305,010.59
  6. Step 6: Final answer
    x = 233,278.31

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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.