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Finding the Fourth Proportional to 342,278.87, 472,334.90 and 189,323.12

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Solution

The fourth proportional to 342,278.87, 472,334.90 and 189,323.12 is: 261,260.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,278.87 : 472,334.90 = 189,323.12 : x
  2. Step 2: Convert to fraction form
    342,278.87/472,334.90 = 189,323.12/x
  3. Step 3: Cross multiply
    342,278.87x = 472,334.90 × 189,323.12
  4. Step 4: Simplify right side
    342,278.87x = 89,423,917,187.11
  5. Step 5: Solve for x
    x = 89,423,917,187.11/342,278.87
  6. Step 6: Final answer
    x = 261,260.41

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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.