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Finding the Fourth Proportional to 342,301.68, 472,392.90 and 189,339.21

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Solution

The fourth proportional to 342,301.68, 472,392.90 and 189,339.21 is: 261,297.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,301.68 : 472,392.90 = 189,339.21 : x
  2. Step 2: Convert to fraction form
    342,301.68/472,392.90 = 189,339.21/x
  3. Step 3: Cross multiply
    342,301.68x = 472,392.90 × 189,339.21
  4. Step 4: Simplify right side
    342,301.68x = 89,442,498,495.61
  5. Step 5: Solve for x
    x = 89,442,498,495.61/342,301.68
  6. Step 6: Final answer
    x = 261,297.28

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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.