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Finding the Fourth Proportional to 262,888.88, 394,355.16 and 105,031.28

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Solution

The fourth proportional to 262,888.88, 394,355.16 and 105,031.28 is: 157,555.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,888.88 : 394,355.16 = 105,031.28 : x
  2. Step 2: Convert to fraction form
    262,888.88/394,355.16 = 105,031.28/x
  3. Step 3: Cross multiply
    262,888.88x = 394,355.16 × 105,031.28
  4. Step 4: Simplify right side
    262,888.88x = 41,419,627,229.40
  5. Step 5: Solve for x
    x = 41,419,627,229.40/262,888.88
  6. Step 6: Final answer
    x = 157,555.65

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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.