Home / 212,979.40-318,804.30-156,882.76

Finding the Fourth Proportional to 212,979.40, 318,804.30 and 156,882.76

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Solution

The fourth proportional to 212,979.40, 318,804.30 and 156,882.76 is: 234,834.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,979.40 : 318,804.30 = 156,882.76 : x
  2. Step 2: Convert to fraction form
    212,979.40/318,804.30 = 156,882.76/x
  3. Step 3: Cross multiply
    212,979.40x = 318,804.30 × 156,882.76
  4. Step 4: Simplify right side
    212,979.40x = 50,014,898,483.87
  5. Step 5: Solve for x
    x = 50,014,898,483.87/212,979.40
  6. Step 6: Final answer
    x = 234,834.44

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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.