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Finding the Fourth Proportional to 245,986.40, 368,979.60 and 88,230.80

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Solution

The fourth proportional to 245,986.40, 368,979.60 and 88,230.80 is: 132,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,986.40 : 368,979.60 = 88,230.80 : x
  2. Step 2: Convert to fraction form
    245,986.40/368,979.60 = 88,230.80/x
  3. Step 3: Cross multiply
    245,986.40x = 368,979.60 × 88,230.80
  4. Step 4: Simplify right side
    245,986.40x = 32,555,365,291.68
  5. Step 5: Solve for x
    x = 32,555,365,291.68/245,986.40
  6. Step 6: Final answer
    x = 132,346.20

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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.