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Finding the Fourth Proportional to 342,346.78, 472,279.37 and 221,527.11

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Solution

The fourth proportional to 342,346.78, 472,279.37 and 221,527.11 is: 305,604.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,346.78 : 472,279.37 = 221,527.11 : x
  2. Step 2: Convert to fraction form
    342,346.78/472,279.37 = 221,527.11/x
  3. Step 3: Cross multiply
    342,346.78x = 472,279.37 × 221,527.11
  4. Step 4: Simplify right side
    342,346.78x = 104,622,682,841.09
  5. Step 5: Solve for x
    x = 104,622,682,841.09/342,346.78
  6. Step 6: Final answer
    x = 305,604.40

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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.