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Finding the Fourth Proportional to 268,393.50, 402,603.84 and 68,715.54

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Solution

The fourth proportional to 268,393.50, 402,603.84 and 68,715.54 is: 103,076.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,393.50 : 402,603.84 = 68,715.54 : x
  2. Step 2: Convert to fraction form
    268,393.50/402,603.84 = 68,715.54/x
  3. Step 3: Cross multiply
    268,393.50x = 402,603.84 × 68,715.54
  4. Step 4: Simplify right side
    268,393.50x = 27,665,140,271.67
  5. Step 5: Solve for x
    x = 27,665,140,271.67/268,393.50
  6. Step 6: Final answer
    x = 103,076.79

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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.