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Finding the Fourth Proportional to 239,969.72, 331,156.24 and 131,074.12

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Solution

The fourth proportional to 239,969.72, 331,156.24 and 131,074.12 is: 180,881.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,969.72 : 331,156.24 = 131,074.12 : x
  2. Step 2: Convert to fraction form
    239,969.72/331,156.24 = 131,074.12/x
  3. Step 3: Cross multiply
    239,969.72x = 331,156.24 × 131,074.12
  4. Step 4: Simplify right side
    239,969.72x = 43,406,013,568.40
  5. Step 5: Solve for x
    x = 43,406,013,568.40/239,969.72
  6. Step 6: Final answer
    x = 180,881.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.