Home / 212,822.40-319,233.60-208,675.20

Finding the Fourth Proportional to 212,822.40, 319,233.60 and 208,675.20

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Solution

The fourth proportional to 212,822.40, 319,233.60 and 208,675.20 is: 313,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,822.40 : 319,233.60 = 208,675.20 : x
  2. Step 2: Convert to fraction form
    212,822.40/319,233.60 = 208,675.20/x
  3. Step 3: Cross multiply
    212,822.40x = 319,233.60 × 208,675.20
  4. Step 4: Simplify right side
    212,822.40x = 66,616,135,326.72
  5. Step 5: Solve for x
    x = 66,616,135,326.72/212,822.40
  6. Step 6: Final answer
    x = 313,012.80

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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.