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Finding the Fourth Proportional to 243,470.62, 365,245.17 and 74,990.86

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Solution

The fourth proportional to 243,470.62, 365,245.17 and 74,990.86 is: 112,498.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,470.62 : 365,245.17 = 74,990.86 : x
  2. Step 2: Convert to fraction form
    243,470.62/365,245.17 = 74,990.86/x
  3. Step 3: Cross multiply
    243,470.62x = 365,245.17 × 74,990.86
  4. Step 4: Simplify right side
    243,470.62x = 27,390,049,584.49
  5. Step 5: Solve for x
    x = 27,390,049,584.49/243,470.62
  6. Step 6: Final answer
    x = 112,498.38

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1.5x scale

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.