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Finding the Fourth Proportional to 212,098.92, 318,146.46 and 64,354.92

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Solution

The fourth proportional to 212,098.92, 318,146.46 and 64,354.92 is: 96,531.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,098.92 : 318,146.46 = 64,354.92 : x
  2. Step 2: Convert to fraction form
    212,098.92/318,146.46 = 64,354.92/x
  3. Step 3: Cross multiply
    212,098.92x = 318,146.46 × 64,354.92
  4. Step 4: Simplify right side
    212,098.92x = 20,474,289,981.58
  5. Step 5: Solve for x
    x = 20,474,289,981.58/212,098.92
  6. Step 6: Final answer
    x = 96,531.80

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1.5x scale

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.