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Finding the Fourth Proportional to 309,556.74, 464,335.17 and 247,620.90

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Solution

The fourth proportional to 309,556.74, 464,335.17 and 247,620.90 is: 371,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,556.74 : 464,335.17 = 247,620.90 : x
  2. Step 2: Convert to fraction form
    309,556.74/464,335.17 = 247,620.90/x
  3. Step 3: Cross multiply
    309,556.74x = 464,335.17 × 247,620.90
  4. Step 4: Simplify right side
    309,556.74x = 114,979,092,697.05
  5. Step 5: Solve for x
    x = 114,979,092,697.05/309,556.74
  6. Step 6: Final answer
    x = 371,431.40

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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.