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Finding the Fourth Proportional to 229,419.20, 344,128.80 and 71,663.60

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Solution

The fourth proportional to 229,419.20, 344,128.80 and 71,663.60 is: 107,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,419.20 : 344,128.80 = 71,663.60 : x
  2. Step 2: Convert to fraction form
    229,419.20/344,128.80 = 71,663.60/x
  3. Step 3: Cross multiply
    229,419.20x = 344,128.80 × 71,663.60
  4. Step 4: Simplify right side
    229,419.20x = 24,661,508,671.68
  5. Step 5: Solve for x
    x = 24,661,508,671.68/229,419.20
  6. Step 6: Final answer
    x = 107,495.40

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1.5x scale

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.