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Finding the Fourth Proportional to 268,207.88, 402,311.76 and 68,528.64

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Solution

The fourth proportional to 268,207.88, 402,311.76 and 68,528.64 is: 102,792.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,207.88 : 402,311.76 = 68,528.64 : x
  2. Step 2: Convert to fraction form
    268,207.88/402,311.76 = 68,528.64/x
  3. Step 3: Cross multiply
    268,207.88x = 402,311.76 × 68,528.64
  4. Step 4: Simplify right side
    268,207.88x = 27,569,877,768.81
  5. Step 5: Solve for x
    x = 27,569,877,768.81/268,207.88
  6. Step 6: Final answer
    x = 102,792.94

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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.