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Finding the Fourth Proportional to 342,519.30, 472,665.96 and 189,548.28

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Solution

The fourth proportional to 342,519.30, 472,665.96 and 189,548.28 is: 261,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,519.30 : 472,665.96 = 189,548.28 : x
  2. Step 2: Convert to fraction form
    342,519.30/472,665.96 = 189,548.28/x
  3. Step 3: Cross multiply
    342,519.30x = 472,665.96 × 189,548.28
  4. Step 4: Simplify right side
    342,519.30x = 89,593,019,732.55
  5. Step 5: Solve for x
    x = 89,593,019,732.55/342,519.30
  6. Step 6: Final answer
    x = 261,570.72

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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.