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Finding the Fourth Proportional to 302,680.54, 454,046.94 and 78,039.04

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Solution

The fourth proportional to 302,680.54, 454,046.94 and 78,039.04 is: 117,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,680.54 : 454,046.94 = 78,039.04 : x
  2. Step 2: Convert to fraction form
    302,680.54/454,046.94 = 78,039.04/x
  3. Step 3: Cross multiply
    302,680.54x = 454,046.94 × 78,039.04
  4. Step 4: Simplify right side
    302,680.54x = 35,433,387,312.54
  5. Step 5: Solve for x
    x = 35,433,387,312.54/302,680.54
  6. Step 6: Final answer
    x = 117,065.30

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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.