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Finding the Fourth Proportional to 298,976.60, 448,464.90 and 172,616.60

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Solution

The fourth proportional to 298,976.60, 448,464.90 and 172,616.60 is: 258,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,976.60 : 448,464.90 = 172,616.60 : x
  2. Step 2: Convert to fraction form
    298,976.60/448,464.90 = 172,616.60/x
  3. Step 3: Cross multiply
    298,976.60x = 448,464.90 × 172,616.60
  4. Step 4: Simplify right side
    298,976.60x = 77,412,486,257.34
  5. Step 5: Solve for x
    x = 77,412,486,257.34/298,976.60
  6. Step 6: Final answer
    x = 258,924.90

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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.