Home / 212,362.35-318,599.07-79,243.77

Finding the Fourth Proportional to 212,362.35, 318,599.07 and 79,243.77

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Solution

The fourth proportional to 212,362.35, 318,599.07 and 79,243.77 is: 118,886.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,362.35 : 318,599.07 = 79,243.77 : x
  2. Step 2: Convert to fraction form
    212,362.35/318,599.07 = 79,243.77/x
  3. Step 3: Cross multiply
    212,362.35x = 318,599.07 × 79,243.77
  4. Step 4: Simplify right side
    212,362.35x = 25,246,991,425.29
  5. Step 5: Solve for x
    x = 25,246,991,425.29/212,362.35
  6. Step 6: Final answer
    x = 118,886.38

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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.