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Finding the Fourth Proportional to 268,521.89, 402,783.35 and 68,842.98

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Solution

The fourth proportional to 268,521.89, 402,783.35 and 68,842.98 is: 103,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,521.89 : 402,783.35 = 68,842.98 : x
  2. Step 2: Convert to fraction form
    268,521.89/402,783.35 = 68,842.98/x
  3. Step 3: Cross multiply
    268,521.89x = 402,783.35 × 68,842.98
  4. Step 4: Simplify right side
    268,521.89x = 27,728,806,151.41
  5. Step 5: Solve for x
    x = 27,728,806,151.41/268,521.89
  6. Step 6: Final answer
    x = 103,264.60

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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.