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Finding the Fourth Proportional to 213,340.42, 320,163.72 and 124,621.12

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Solution

The fourth proportional to 213,340.42, 320,163.72 and 124,621.12 is: 187,021.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,340.42 : 320,163.72 = 124,621.12 : x
  2. Step 2: Convert to fraction form
    213,340.42/320,163.72 = 124,621.12/x
  3. Step 3: Cross multiply
    213,340.42x = 320,163.72 × 124,621.12
  4. Step 4: Simplify right side
    213,340.42x = 39,899,161,369.77
  5. Step 5: Solve for x
    x = 39,899,161,369.77/213,340.42
  6. Step 6: Final answer
    x = 187,021.11

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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.