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Finding the Fourth Proportional to 342,391.62, 472,514.34 and 189,427.16

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Solution

The fourth proportional to 342,391.62, 472,514.34 and 189,427.16 is: 261,417.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,391.62 : 472,514.34 = 189,427.16 : x
  2. Step 2: Convert to fraction form
    342,391.62/472,514.34 = 189,427.16/x
  3. Step 3: Cross multiply
    342,391.62x = 472,514.34 × 189,427.16
  4. Step 4: Simplify right side
    342,391.62x = 89,507,049,485.47
  5. Step 5: Solve for x
    x = 89,507,049,485.47/342,391.62
  6. Step 6: Final answer
    x = 261,417.17

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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.