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Finding the Fourth Proportional to 213,096.80, 319,256.40 and 173,439.20

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Solution

The fourth proportional to 213,096.80, 319,256.40 and 173,439.20 is: 259,842.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,096.80 : 319,256.40 = 173,439.20 : x
  2. Step 2: Convert to fraction form
    213,096.80/319,256.40 = 173,439.20/x
  3. Step 3: Cross multiply
    213,096.80x = 319,256.40 × 173,439.20
  4. Step 4: Simplify right side
    213,096.80x = 55,371,574,610.88
  5. Step 5: Solve for x
    x = 55,371,574,610.88/213,096.80
  6. Step 6: Final answer
    x = 259,842.36

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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.