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Finding the Fourth Proportional to 300,958.92, 415,353 and 171,916.70

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Solution

The fourth proportional to 300,958.92, 415,353 and 171,916.70 is: 237,262.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,958.92 : 415,353 = 171,916.70 : x
  2. Step 2: Convert to fraction form
    300,958.92/415,353 = 171,916.70/x
  3. Step 3: Cross multiply
    300,958.92x = 415,353 × 171,916.70
  4. Step 4: Simplify right side
    300,958.92x = 71,406,117,095.10
  5. Step 5: Solve for x
    x = 71,406,117,095.10/300,958.92
  6. Step 6: Final answer
    x = 237,262.01

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1.5x scale

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.