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Finding the Fourth Proportional to 212,084, 318,126 and 64,340

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Solution

The fourth proportional to 212,084, 318,126 and 64,340 is: 96,510

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,084 : 318,126 = 64,340 : x
  2. Step 2: Convert to fraction form
    212,084/318,126 = 64,340/x
  3. Step 3: Cross multiply
    212,084x = 318,126 × 64,340
  4. Step 4: Simplify right side
    212,084x = 20,468,226,840
  5. Step 5: Solve for x
    x = 20,468,226,840/212,084
  6. Step 6: Final answer
    x = 96,510

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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.