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Finding the Fourth Proportional to 342,289.64, 472,376.34 and 189,327.21

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Solution

The fourth proportional to 342,289.64, 472,376.34 and 189,327.21 is: 261,280.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,289.64 : 472,376.34 = 189,327.21 : x
  2. Step 2: Convert to fraction form
    342,289.64/472,376.34 = 189,327.21/x
  3. Step 3: Cross multiply
    342,289.64x = 472,376.34 × 189,327.21
  4. Step 4: Simplify right side
    342,289.64x = 89,433,694,522.21
  5. Step 5: Solve for x
    x = 89,433,694,522.21/342,289.64
  6. Step 6: Final answer
    x = 261,280.76

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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.