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Finding the Fourth Proportional to 338,722.01, 508,033.55 and 98,771.43

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Solution

The fourth proportional to 338,722.01, 508,033.55 and 98,771.43 is: 148,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,722.01 : 508,033.55 = 98,771.43 : x
  2. Step 2: Convert to fraction form
    338,722.01/508,033.55 = 98,771.43/x
  3. Step 3: Cross multiply
    338,722.01x = 508,033.55 × 98,771.43
  4. Step 4: Simplify right side
    338,722.01x = 50,179,200,221.48
  5. Step 5: Solve for x
    x = 50,179,200,221.48/338,722.01
  6. Step 6: Final answer
    x = 148,142.72

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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.