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Finding the Fourth Proportional to 277,872.80, 416,809.20 and 90,839.20

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Solution

The fourth proportional to 277,872.80, 416,809.20 and 90,839.20 is: 136,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,872.80 : 416,809.20 = 90,839.20 : x
  2. Step 2: Convert to fraction form
    277,872.80/416,809.20 = 90,839.20/x
  3. Step 3: Cross multiply
    277,872.80x = 416,809.20 × 90,839.20
  4. Step 4: Simplify right side
    277,872.80x = 37,862,614,280.64
  5. Step 5: Solve for x
    x = 37,862,614,280.64/277,872.80
  6. Step 6: Final answer
    x = 136,258.80

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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.