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Finding the Fourth Proportional to 298,247.68, 447,394.56 and 120,670.72

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Solution

The fourth proportional to 298,247.68, 447,394.56 and 120,670.72 is: 181,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,247.68 : 447,394.56 = 120,670.72 : x
  2. Step 2: Convert to fraction form
    298,247.68/447,394.56 = 120,670.72/x
  3. Step 3: Cross multiply
    298,247.68x = 447,394.56 × 120,670.72
  4. Step 4: Simplify right side
    298,247.68x = 53,987,423,679.28
  5. Step 5: Solve for x
    x = 53,987,423,679.28/298,247.68
  6. Step 6: Final answer
    x = 181,015.40

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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.