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Finding the Fourth Proportional to 342,042.56, 472,016.28 and 191,139.56

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Solution

The fourth proportional to 342,042.56, 472,016.28 and 191,139.56 is: 263,771.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,042.56 : 472,016.28 = 191,139.56 : x
  2. Step 2: Convert to fraction form
    342,042.56/472,016.28 = 191,139.56/x
  3. Step 3: Cross multiply
    342,042.56x = 472,016.28 × 191,139.56
  4. Step 4: Simplify right side
    342,042.56x = 90,220,984,072.04
  5. Step 5: Solve for x
    x = 90,220,984,072.04/342,042.56
  6. Step 6: Final answer
    x = 263,771.22

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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.