Home / 212,972.40-319,458.60-159,828.30

Finding the Fourth Proportional to 212,972.40, 319,458.60 and 159,828.30

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Solution

The fourth proportional to 212,972.40, 319,458.60 and 159,828.30 is: 239,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,972.40 : 319,458.60 = 159,828.30 : x
  2. Step 2: Convert to fraction form
    212,972.40/319,458.60 = 159,828.30/x
  3. Step 3: Cross multiply
    212,972.40x = 319,458.60 × 159,828.30
  4. Step 4: Simplify right side
    212,972.40x = 51,058,524,958.38
  5. Step 5: Solve for x
    x = 51,058,524,958.38/212,972.40
  6. Step 6: Final answer
    x = 239,742.45

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1.5x scale

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.