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Finding the Fourth Proportional to 212,762.34, 319,198.77 and 79,652.82

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Solution

The fourth proportional to 212,762.34, 319,198.77 and 79,652.82 is: 119,499.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,762.34 : 319,198.77 = 79,652.82 : x
  2. Step 2: Convert to fraction form
    212,762.34/319,198.77 = 79,652.82/x
  3. Step 3: Cross multiply
    212,762.34x = 319,198.77 × 79,652.82
  4. Step 4: Simplify right side
    212,762.34x = 25,425,082,171.03
  5. Step 5: Solve for x
    x = 25,425,082,171.03/212,762.34
  6. Step 6: Final answer
    x = 119,499.92

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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.