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Finding the Fourth Proportional to 277,777.72, 416,718.42 and 90,920.44

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Solution

The fourth proportional to 277,777.72, 416,718.42 and 90,920.44 is: 136,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,777.72 : 416,718.42 = 90,920.44 : x
  2. Step 2: Convert to fraction form
    277,777.72/416,718.42 = 90,920.44/x
  3. Step 3: Cross multiply
    277,777.72x = 416,718.42 × 90,920.44
  4. Step 4: Simplify right side
    277,777.72x = 37,888,222,102.50
  5. Step 5: Solve for x
    x = 37,888,222,102.50/277,777.72
  6. Step 6: Final answer
    x = 136,397.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.