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Finding the Fourth Proportional to 277,085.20, 415,627.80 and 90,115.60

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Solution

The fourth proportional to 277,085.20, 415,627.80 and 90,115.60 is: 135,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,085.20 : 415,627.80 = 90,115.60 : x
  2. Step 2: Convert to fraction form
    277,085.20/415,627.80 = 90,115.60/x
  3. Step 3: Cross multiply
    277,085.20x = 415,627.80 × 90,115.60
  4. Step 4: Simplify right side
    277,085.20x = 37,454,548,573.68
  5. Step 5: Solve for x
    x = 37,454,548,573.68/277,085.20
  6. Step 6: Final answer
    x = 135,173.40

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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.