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Finding the Fourth Proportional to 260,577.01, 390,868.75 and 71,046.73

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Solution

The fourth proportional to 260,577.01, 390,868.75 and 71,046.73 is: 106,570.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,577.01 : 390,868.75 = 71,046.73 : x
  2. Step 2: Convert to fraction form
    260,577.01/390,868.75 = 71,046.73/x
  3. Step 3: Cross multiply
    260,577.01x = 390,868.75 × 71,046.73
  4. Step 4: Simplify right side
    260,577.01x = 27,769,944,237.11
  5. Step 5: Solve for x
    x = 27,769,944,237.11/260,577.01
  6. Step 6: Final answer
    x = 106,570.97

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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.