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Finding the Fourth Proportional to 213,803.66, 320,610.72 and 113,945.24

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Solution

The fourth proportional to 213,803.66, 320,610.72 and 113,945.24 is: 170,867.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,803.66 : 320,610.72 = 113,945.24 : x
  2. Step 2: Convert to fraction form
    213,803.66/320,610.72 = 113,945.24/x
  3. Step 3: Cross multiply
    213,803.66x = 320,610.72 × 113,945.24
  4. Step 4: Simplify right side
    213,803.66x = 36,532,065,436.97
  5. Step 5: Solve for x
    x = 36,532,065,436.97/213,803.66
  6. Step 6: Final answer
    x = 170,867.35

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1.5x scale

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.