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Finding the Fourth Proportional to 245,003.20, 367,515.60 and 138,385.60

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Solution

The fourth proportional to 245,003.20, 367,515.60 and 138,385.60 is: 207,584.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,003.20 : 367,515.60 = 138,385.60 : x
  2. Step 2: Convert to fraction form
    245,003.20/367,515.60 = 138,385.60/x
  3. Step 3: Cross multiply
    245,003.20x = 367,515.60 × 138,385.60
  4. Step 4: Simplify right side
    245,003.20x = 50,858,866,815.36
  5. Step 5: Solve for x
    x = 50,858,866,815.36/245,003.20
  6. Step 6: Final answer
    x = 207,584.50

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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.