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Finding the Fourth Proportional to 260,191.72, 390,298.92 and 89,530.96

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Solution

The fourth proportional to 260,191.72, 390,298.92 and 89,530.96 is: 134,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,191.72 : 390,298.92 = 89,530.96 : x
  2. Step 2: Convert to fraction form
    260,191.72/390,298.92 = 89,530.96/x
  3. Step 3: Cross multiply
    260,191.72x = 390,298.92 × 89,530.96
  4. Step 4: Simplify right side
    260,191.72x = 34,943,836,994.56
  5. Step 5: Solve for x
    x = 34,943,836,994.56/260,191.72
  6. Step 6: Final answer
    x = 134,300.34

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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.