Home / 260,402.45-390,663.81-82,909.17

Finding the Fourth Proportional to 260,402.45, 390,663.81 and 82,909.17

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Solution

The fourth proportional to 260,402.45, 390,663.81 and 82,909.17 is: 124,382.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,402.45 : 390,663.81 = 82,909.17 : x
  2. Step 2: Convert to fraction form
    260,402.45/390,663.81 = 82,909.17/x
  3. Step 3: Cross multiply
    260,402.45x = 390,663.81 × 82,909.17
  4. Step 4: Simplify right side
    260,402.45x = 32,389,612,236.14
  5. Step 5: Solve for x
    x = 32,389,612,236.14/260,402.45
  6. Step 6: Final answer
    x = 124,382.90

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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.