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Finding the Fourth Proportional to 212,767.92, 319,159.98 and 79,634.16

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Solution

The fourth proportional to 212,767.92, 319,159.98 and 79,634.16 is: 119,454.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,767.92 : 319,159.98 = 79,634.16 : x
  2. Step 2: Convert to fraction form
    212,767.92/319,159.98 = 79,634.16/x
  3. Step 3: Cross multiply
    212,767.92x = 319,159.98 × 79,634.16
  4. Step 4: Simplify right side
    212,767.92x = 25,416,036,912.92
  5. Step 5: Solve for x
    x = 25,416,036,912.92/212,767.92
  6. Step 6: Final answer
    x = 119,454.27

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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.