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Finding the Fourth Proportional to 344,110.40, 516,165.60 and 218,139.20

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Solution

The fourth proportional to 344,110.40, 516,165.60 and 218,139.20 is: 327,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,110.40 : 516,165.60 = 218,139.20 : x
  2. Step 2: Convert to fraction form
    344,110.40/516,165.60 = 218,139.20/x
  3. Step 3: Cross multiply
    344,110.40x = 516,165.60 × 218,139.20
  4. Step 4: Simplify right side
    344,110.40x = 112,595,951,051.52
  5. Step 5: Solve for x
    x = 112,595,951,051.52/344,110.40
  6. Step 6: Final answer
    x = 327,208.80

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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.