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Finding the Fourth Proportional to 213,803.57, 320,610.58 and 113,945.15

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Solution

The fourth proportional to 213,803.57, 320,610.58 and 113,945.15 is: 170,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,803.57 : 320,610.58 = 113,945.15 : x
  2. Step 2: Convert to fraction form
    213,803.57/320,610.58 = 113,945.15/x
  3. Step 3: Cross multiply
    213,803.57x = 320,610.58 × 113,945.15
  4. Step 4: Simplify right side
    213,803.57x = 36,532,019,026.63
  5. Step 5: Solve for x
    x = 36,532,019,026.63/213,803.57
  6. Step 6: Final answer
    x = 170,867.21

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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.