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Finding the Fourth Proportional to 298,697.59, 411,925.80 and 217,997.29

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Solution

The fourth proportional to 298,697.59, 411,925.80 and 217,997.29 is: 300,634.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,697.59 : 411,925.80 = 217,997.29 : x
  2. Step 2: Convert to fraction form
    298,697.59/411,925.80 = 217,997.29/x
  3. Step 3: Cross multiply
    298,697.59x = 411,925.80 × 217,997.29
  4. Step 4: Simplify right side
    298,697.59x = 89,798,708,081.08
  5. Step 5: Solve for x
    x = 89,798,708,081.08/298,697.59
  6. Step 6: Final answer
    x = 300,634.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.