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Finding the Fourth Proportional to 344,078.40, 516,117.60 and 203,764.80

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Solution

The fourth proportional to 344,078.40, 516,117.60 and 203,764.80 is: 305,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,078.40 : 516,117.60 = 203,764.80 : x
  2. Step 2: Convert to fraction form
    344,078.40/516,117.60 = 203,764.80/x
  3. Step 3: Cross multiply
    344,078.40x = 516,117.60 × 203,764.80
  4. Step 4: Simplify right side
    344,078.40x = 105,166,599,540.48
  5. Step 5: Solve for x
    x = 105,166,599,540.48/344,078.40
  6. Step 6: Final answer
    x = 305,647.20

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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.