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Finding the Fourth Proportional to 225,635.40, 338,582.70 and 85,494.60

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Solution

The fourth proportional to 225,635.40, 338,582.70 and 85,494.60 is: 128,291.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,635.40 : 338,582.70 = 85,494.60 : x
  2. Step 2: Convert to fraction form
    225,635.40/338,582.70 = 85,494.60/x
  3. Step 3: Cross multiply
    225,635.40x = 338,582.70 × 85,494.60
  4. Step 4: Simplify right side
    225,635.40x = 28,946,992,503.42
  5. Step 5: Solve for x
    x = 28,946,992,503.42/225,635.40
  6. Step 6: Final answer
    x = 128,291.01

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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.