Home / 212,964.28-319,408.94-78,000.46

Finding the Fourth Proportional to 212,964.28, 319,408.94 and 78,000.46

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Solution

The fourth proportional to 212,964.28, 319,408.94 and 78,000.46 is: 116,986.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,964.28 : 319,408.94 = 78,000.46 : x
  2. Step 2: Convert to fraction form
    212,964.28/319,408.94 = 78,000.46/x
  3. Step 3: Cross multiply
    212,964.28x = 319,408.94 × 78,000.46
  4. Step 4: Simplify right side
    212,964.28x = 24,914,044,248.11
  5. Step 5: Solve for x
    x = 24,914,044,248.11/212,964.28
  6. Step 6: Final answer
    x = 116,986.96

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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.