Home / 212,939.40-319,204.30-165,528.20

Finding the Fourth Proportional to 212,939.40, 319,204.30 and 165,528.20

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Solution

The fourth proportional to 212,939.40, 319,204.30 and 165,528.20 is: 248,133.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,939.40 : 319,204.30 = 165,528.20 : x
  2. Step 2: Convert to fraction form
    212,939.40/319,204.30 = 165,528.20/x
  3. Step 3: Cross multiply
    212,939.40x = 319,204.30 × 165,528.20
  4. Step 4: Simplify right side
    212,939.40x = 52,837,313,211.26
  5. Step 5: Solve for x
    x = 52,837,313,211.26/212,939.40
  6. Step 6: Final answer
    x = 248,133.10

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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.