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Finding the Fourth Proportional to 342,110.72, 472,104.64 and 191,221.76

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Solution

The fourth proportional to 342,110.72, 472,104.64 and 191,221.76 is: 263,881.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,110.72 : 472,104.64 = 191,221.76 : x
  2. Step 2: Convert to fraction form
    342,110.72/472,104.64 = 191,221.76/x
  3. Step 3: Cross multiply
    342,110.72x = 472,104.64 × 191,221.76
  4. Step 4: Simplify right side
    342,110.72x = 90,276,680,164.97
  5. Step 5: Solve for x
    x = 90,276,680,164.97/342,110.72
  6. Step 6: Final answer
    x = 263,881.47

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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.