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Finding the Fourth Proportional to 243,872.37, 336,523.26 and 140,479.21

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Solution

The fourth proportional to 243,872.37, 336,523.26 and 140,479.21 is: 193,849.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,872.37 : 336,523.26 = 140,479.21 : x
  2. Step 2: Convert to fraction form
    243,872.37/336,523.26 = 140,479.21/x
  3. Step 3: Cross multiply
    243,872.37x = 336,523.26 × 140,479.21
  4. Step 4: Simplify right side
    243,872.37x = 47,274,521,868.68
  5. Step 5: Solve for x
    x = 47,274,521,868.68/243,872.37
  6. Step 6: Final answer
    x = 193,849.44

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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.