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Finding the Fourth Proportional to 268,441.50, 402,653.03 and 68,763.62

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Solution

The fourth proportional to 268,441.50, 402,653.03 and 68,763.62 is: 103,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,441.50 : 402,653.03 = 68,763.62 : x
  2. Step 2: Convert to fraction form
    268,441.50/402,653.03 = 68,763.62/x
  3. Step 3: Cross multiply
    268,441.50x = 402,653.03 × 68,763.62
  4. Step 4: Simplify right side
    268,441.50x = 27,687,879,946.77
  5. Step 5: Solve for x
    x = 27,687,879,946.77/268,441.50
  6. Step 6: Final answer
    x = 103,143.07

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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.