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Finding the Fourth Proportional to 260,569.31, 390,628.98 and 100,757.12

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Solution

The fourth proportional to 260,569.31, 390,628.98 and 100,757.12 is: 151,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,569.31 : 390,628.98 = 100,757.12 : x
  2. Step 2: Convert to fraction form
    260,569.31/390,628.98 = 100,757.12/x
  3. Step 3: Cross multiply
    260,569.31x = 390,628.98 × 100,757.12
  4. Step 4: Simplify right side
    260,569.31x = 39,358,649,060.19
  5. Step 5: Solve for x
    x = 39,358,649,060.19/260,569.31
  6. Step 6: Final answer
    x = 151,048.68

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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.