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Finding the Fourth Proportional to 268,336.80, 402,553.80 and 134,881.20

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Solution

The fourth proportional to 268,336.80, 402,553.80 and 134,881.20 is: 202,346.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,336.80 : 402,553.80 = 134,881.20 : x
  2. Step 2: Convert to fraction form
    268,336.80/402,553.80 = 134,881.20/x
  3. Step 3: Cross multiply
    268,336.80x = 402,553.80 × 134,881.20
  4. Step 4: Simplify right side
    268,336.80x = 54,296,939,608.56
  5. Step 5: Solve for x
    x = 54,296,939,608.56/268,336.80
  6. Step 6: Final answer
    x = 202,346.23

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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.