Home / 212,974.40-318,796.80-156,877.76

Finding the Fourth Proportional to 212,974.40, 318,796.80 and 156,877.76

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Solution

The fourth proportional to 212,974.40, 318,796.80 and 156,877.76 is: 234,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,974.40 : 318,796.80 = 156,877.76 : x
  2. Step 2: Convert to fraction form
    212,974.40/318,796.80 = 156,877.76/x
  3. Step 3: Cross multiply
    212,974.40x = 318,796.80 × 156,877.76
  4. Step 4: Simplify right side
    212,974.40x = 50,012,127,879.17
  5. Step 5: Solve for x
    x = 50,012,127,879.17/212,974.40
  6. Step 6: Final answer
    x = 234,826.95

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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.