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Finding the Fourth Proportional to 260,513.24, 390,754.86 and 100,557.88

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Solution

The fourth proportional to 260,513.24, 390,754.86 and 100,557.88 is: 150,831.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,513.24 : 390,754.86 = 100,557.88 : x
  2. Step 2: Convert to fraction form
    260,513.24/390,754.86 = 100,557.88/x
  3. Step 3: Cross multiply
    260,513.24x = 390,754.86 × 100,557.88
  4. Step 4: Simplify right side
    260,513.24x = 39,293,480,321.30
  5. Step 5: Solve for x
    x = 39,293,480,321.30/260,513.24
  6. Step 6: Final answer
    x = 150,831.03

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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.