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Finding the Fourth Proportional to 342,129.16, 472,119.10 and 189,158.44

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Solution

The fourth proportional to 342,129.16, 472,119.10 and 189,158.44 is: 261,028.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,129.16 : 472,119.10 = 189,158.44 : x
  2. Step 2: Convert to fraction form
    342,129.16/472,119.10 = 189,158.44/x
  3. Step 3: Cross multiply
    342,129.16x = 472,119.10 × 189,158.44
  4. Step 4: Simplify right side
    342,129.16x = 89,305,312,450.20
  5. Step 5: Solve for x
    x = 89,305,312,450.20/342,129.16
  6. Step 6: Final answer
    x = 261,028.06

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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.