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Finding the Fourth Proportional to 342,657.38, 472,801.56 and 221,781.89

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Solution

The fourth proportional to 342,657.38, 472,801.56 and 221,781.89 is: 306,016.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,657.38 : 472,801.56 = 221,781.89 : x
  2. Step 2: Convert to fraction form
    342,657.38/472,801.56 = 221,781.89/x
  3. Step 3: Cross multiply
    342,657.38x = 472,801.56 × 221,781.89
  4. Step 4: Simplify right side
    342,657.38x = 104,858,821,207.74
  5. Step 5: Solve for x
    x = 104,858,821,207.74/342,657.38
  6. Step 6: Final answer
    x = 306,016.53

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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.