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Finding the Fourth Proportional to 342,185.71, 472,219.35 and 189,234.26

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Solution

The fourth proportional to 342,185.71, 472,219.35 and 189,234.26 is: 261,144.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,185.71 : 472,219.35 = 189,234.26 : x
  2. Step 2: Convert to fraction form
    342,185.71/472,219.35 = 189,234.26/x
  3. Step 3: Cross multiply
    342,185.71x = 472,219.35 × 189,234.26
  4. Step 4: Simplify right side
    342,185.71x = 89,360,079,551.69
  5. Step 5: Solve for x
    x = 89,360,079,551.69/342,185.71
  6. Step 6: Final answer
    x = 261,144.98

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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.