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Finding the Fourth Proportional to 285,523.20, 428,284.80 and 88,505.60

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Solution

The fourth proportional to 285,523.20, 428,284.80 and 88,505.60 is: 132,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,523.20 : 428,284.80 = 88,505.60 : x
  2. Step 2: Convert to fraction form
    285,523.20/428,284.80 = 88,505.60/x
  3. Step 3: Cross multiply
    285,523.20x = 428,284.80 × 88,505.60
  4. Step 4: Simplify right side
    285,523.20x = 37,905,603,194.88
  5. Step 5: Solve for x
    x = 37,905,603,194.88/285,523.20
  6. Step 6: Final answer
    x = 132,758.40

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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.