Home / 212,938.40-319,202.80-165,527.20

Finding the Fourth Proportional to 212,938.40, 319,202.80 and 165,527.20

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Solution

The fourth proportional to 212,938.40, 319,202.80 and 165,527.20 is: 248,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,938.40 : 319,202.80 = 165,527.20 : x
  2. Step 2: Convert to fraction form
    212,938.40/319,202.80 = 165,527.20/x
  3. Step 3: Cross multiply
    212,938.40x = 319,202.80 × 165,527.20
  4. Step 4: Simplify right side
    212,938.40x = 52,836,745,716.16
  5. Step 5: Solve for x
    x = 52,836,745,716.16/212,938.40
  6. Step 6: Final answer
    x = 248,131.60

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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.