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Finding the Fourth Proportional to 240,247.98, 331,487.21 and 143,433

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Solution

The fourth proportional to 240,247.98, 331,487.21 and 143,433 is: 197,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,247.98 : 331,487.21 = 143,433 : x
  2. Step 2: Convert to fraction form
    240,247.98/331,487.21 = 143,433/x
  3. Step 3: Cross multiply
    240,247.98x = 331,487.21 × 143,433
  4. Step 4: Simplify right side
    240,247.98x = 47,546,204,991.93
  5. Step 5: Solve for x
    x = 47,546,204,991.93/240,247.98
  6. Step 6: Final answer
    x = 197,904.70

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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.