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Finding the Fourth Proportional to 338,662.40, 508,014.72 and 89,344.64

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Solution

The fourth proportional to 338,662.40, 508,014.72 and 89,344.64 is: 134,022.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,662.40 : 508,014.72 = 89,344.64 : x
  2. Step 2: Convert to fraction form
    338,662.40/508,014.72 = 89,344.64/x
  3. Step 3: Cross multiply
    338,662.40x = 508,014.72 × 89,344.64
  4. Step 4: Simplify right side
    338,662.40x = 45,388,392,273.10
  5. Step 5: Solve for x
    x = 45,388,392,273.10/338,662.40
  6. Step 6: Final answer
    x = 134,022.53

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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.