Home / 213,631.25-320,465.15-55,859.45

Finding the Fourth Proportional to 213,631.25, 320,465.15 and 55,859.45

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Solution

The fourth proportional to 213,631.25, 320,465.15 and 55,859.45 is: 83,793.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,631.25 : 320,465.15 = 55,859.45 : x
  2. Step 2: Convert to fraction form
    213,631.25/320,465.15 = 55,859.45/x
  3. Step 3: Cross multiply
    213,631.25x = 320,465.15 × 55,859.45
  4. Step 4: Simplify right side
    213,631.25x = 17,901,005,141.54
  5. Step 5: Solve for x
    x = 17,901,005,141.54/213,631.25
  6. Step 6: Final answer
    x = 83,793.95

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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.