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Finding the Fourth Proportional to 342,320.70, 472,366.22 and 189,334.58

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Solution

The fourth proportional to 342,320.70, 472,366.22 and 189,334.58 is: 261,261.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,320.70 : 472,366.22 = 189,334.58 : x
  2. Step 2: Convert to fraction form
    342,320.70/472,366.22 = 189,334.58/x
  3. Step 3: Cross multiply
    342,320.70x = 472,366.22 × 189,334.58
  4. Step 4: Simplify right side
    342,320.70x = 89,435,259,869.89
  5. Step 5: Solve for x
    x = 89,435,259,869.89/342,320.70
  6. Step 6: Final answer
    x = 261,261.62

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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.