Home / 212,922.40-319,178.80-165,511.20

Finding the Fourth Proportional to 212,922.40, 319,178.80 and 165,511.20

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Solution

The fourth proportional to 212,922.40, 319,178.80 and 165,511.20 is: 248,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,922.40 : 319,178.80 = 165,511.20 : x
  2. Step 2: Convert to fraction form
    212,922.40/319,178.80 = 165,511.20/x
  3. Step 3: Cross multiply
    212,922.40x = 319,178.80 × 165,511.20
  4. Step 4: Simplify right side
    212,922.40x = 52,827,666,202.56
  5. Step 5: Solve for x
    x = 52,827,666,202.56/212,922.40
  6. Step 6: Final answer
    x = 248,107.60

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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.