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Finding the Fourth Proportional to 342,205.65, 472,246.79 and 189,235.89

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Solution

The fourth proportional to 342,205.65, 472,246.79 and 189,235.89 is: 261,147.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,205.65 : 472,246.79 = 189,235.89 : x
  2. Step 2: Convert to fraction form
    342,205.65/472,246.79 = 189,235.89/x
  3. Step 3: Cross multiply
    342,205.65x = 472,246.79 × 189,235.89
  4. Step 4: Simplify right side
    342,205.65x = 89,366,040,659.11
  5. Step 5: Solve for x
    x = 89,366,040,659.11/342,205.65
  6. Step 6: Final answer
    x = 261,147.18

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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.