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Finding the Fourth Proportional to 342,319.20, 472,364.14 and 189,333.08

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Solution

The fourth proportional to 342,319.20, 472,364.14 and 189,333.08 is: 261,259.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,319.20 : 472,364.14 = 189,333.08 : x
  2. Step 2: Convert to fraction form
    342,319.20/472,364.14 = 189,333.08/x
  3. Step 3: Cross multiply
    342,319.20x = 472,364.14 × 189,333.08
  4. Step 4: Simplify right side
    342,319.20x = 89,434,157,507.75
  5. Step 5: Solve for x
    x = 89,434,157,507.75/342,319.20
  6. Step 6: Final answer
    x = 261,259.54

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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.