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Finding the Fourth Proportional to 260,728.72, 391,094.52 and 94,512.40

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Solution

The fourth proportional to 260,728.72, 391,094.52 and 94,512.40 is: 141,769.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,728.72 : 391,094.52 = 94,512.40 : x
  2. Step 2: Convert to fraction form
    260,728.72/391,094.52 = 94,512.40/x
  3. Step 3: Cross multiply
    260,728.72x = 391,094.52 × 94,512.40
  4. Step 4: Simplify right side
    260,728.72x = 36,963,281,712.05
  5. Step 5: Solve for x
    x = 36,963,281,712.05/260,728.72
  6. Step 6: Final answer
    x = 141,769.12

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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.