Home / 212,968.80-319,064.40-173,311.20

Finding the Fourth Proportional to 212,968.80, 319,064.40 and 173,311.20

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Solution

The fourth proportional to 212,968.80, 319,064.40 and 173,311.20 is: 259,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,968.80 : 319,064.40 = 173,311.20 : x
  2. Step 2: Convert to fraction form
    212,968.80/319,064.40 = 173,311.20/x
  3. Step 3: Cross multiply
    212,968.80x = 319,064.40 × 173,311.20
  4. Step 4: Simplify right side
    212,968.80x = 55,297,434,041.28
  5. Step 5: Solve for x
    x = 55,297,434,041.28/212,968.80
  6. Step 6: Final answer
    x = 259,650.40

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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.