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Finding the Fourth Proportional to 342,637.88, 472,834.67 and 189,672.87

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Solution

The fourth proportional to 342,637.88, 472,834.67 and 189,672.87 is: 261,745.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,637.88 : 472,834.67 = 189,672.87 : x
  2. Step 2: Convert to fraction form
    342,637.88/472,834.67 = 189,672.87/x
  3. Step 3: Cross multiply
    342,637.88x = 472,834.67 × 189,672.87
  4. Step 4: Simplify right side
    342,637.88x = 89,683,907,946.04
  5. Step 5: Solve for x
    x = 89,683,907,946.04/342,637.88
  6. Step 6: Final answer
    x = 261,745.46

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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.