Home / 212,921.10-319,381.65-181,258.20

Finding the Fourth Proportional to 212,921.10, 319,381.65 and 181,258.20

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Solution

The fourth proportional to 212,921.10, 319,381.65 and 181,258.20 is: 271,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,921.10 : 319,381.65 = 181,258.20 : x
  2. Step 2: Convert to fraction form
    212,921.10/319,381.65 = 181,258.20/x
  3. Step 3: Cross multiply
    212,921.10x = 319,381.65 × 181,258.20
  4. Step 4: Simplify right side
    212,921.10x = 57,890,542,992.03
  5. Step 5: Solve for x
    x = 57,890,542,992.03/212,921.10
  6. Step 6: Final answer
    x = 271,887.30

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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.