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Finding the Fourth Proportional to 268,505.88, 402,749.46 and 68,828.28

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Solution

The fourth proportional to 268,505.88, 402,749.46 and 68,828.28 is: 103,240.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,505.88 : 402,749.46 = 68,828.28 : x
  2. Step 2: Convert to fraction form
    268,505.88/402,749.46 = 68,828.28/x
  3. Step 3: Cross multiply
    268,505.88x = 402,749.46 × 68,828.28
  4. Step 4: Simplify right side
    268,505.88x = 27,720,552,602.73
  5. Step 5: Solve for x
    x = 27,720,552,602.73/268,505.88
  6. Step 6: Final answer
    x = 103,240.02

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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.