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Finding the Fourth Proportional to 268,905.76, 403,369.81 and 79,366.16

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Solution

The fourth proportional to 268,905.76, 403,369.81 and 79,366.16 is: 119,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,905.76 : 403,369.81 = 79,366.16 : x
  2. Step 2: Convert to fraction form
    268,905.76/403,369.81 = 79,366.16/x
  3. Step 3: Cross multiply
    268,905.76x = 403,369.81 × 79,366.16
  4. Step 4: Simplify right side
    268,905.76x = 32,013,913,689.64
  5. Step 5: Solve for x
    x = 32,013,913,689.64/268,905.76
  6. Step 6: Final answer
    x = 119,052.54

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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.