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Finding the Fourth Proportional to 351,712.31, 485,299.08 and 196,666.40

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Solution

The fourth proportional to 351,712.31, 485,299.08 and 196,666.40 is: 271,363.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,712.31 : 485,299.08 = 196,666.40 : x
  2. Step 2: Convert to fraction form
    351,712.31/485,299.08 = 196,666.40/x
  3. Step 3: Cross multiply
    351,712.31x = 485,299.08 × 196,666.40
  4. Step 4: Simplify right side
    351,712.31x = 95,442,024,200.16
  5. Step 5: Solve for x
    x = 95,442,024,200.16/351,712.31
  6. Step 6: Final answer
    x = 271,363.90

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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.