Home / 213,183.39-319,750.28-55,424.15

Finding the Fourth Proportional to 213,183.39, 319,750.28 and 55,424.15

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Solution

The fourth proportional to 213,183.39, 319,750.28 and 55,424.15 is: 83,129.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,183.39 : 319,750.28 = 55,424.15 : x
  2. Step 2: Convert to fraction form
    213,183.39/319,750.28 = 55,424.15/x
  3. Step 3: Cross multiply
    213,183.39x = 319,750.28 × 55,424.15
  4. Step 4: Simplify right side
    213,183.39x = 17,721,885,605.39
  5. Step 5: Solve for x
    x = 17,721,885,605.39/213,183.39
  6. Step 6: Final answer
    x = 83,129.77

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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.