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Finding the Fourth Proportional to 342,572.57, 472,751.07 and 189,621.29

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Solution

The fourth proportional to 342,572.57, 472,751.07 and 189,621.29 is: 261,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,572.57 : 472,751.07 = 189,621.29 : x
  2. Step 2: Convert to fraction form
    342,572.57/472,751.07 = 189,621.29/x
  3. Step 3: Cross multiply
    342,572.57x = 472,751.07 × 189,621.29
  4. Step 4: Simplify right side
    342,572.57x = 89,643,667,742.28
  5. Step 5: Solve for x
    x = 89,643,667,742.28/342,572.57
  6. Step 6: Final answer
    x = 261,677.89

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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.