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Finding the Fourth Proportional to 344,391.32, 516,608.86 and 91,667.68

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Solution

The fourth proportional to 344,391.32, 516,608.86 and 91,667.68 is: 137,507.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,391.32 : 516,608.86 = 91,667.68 : x
  2. Step 2: Convert to fraction form
    344,391.32/516,608.86 = 91,667.68/x
  3. Step 3: Cross multiply
    344,391.32x = 516,608.86 × 91,667.68
  4. Step 4: Simplify right side
    344,391.32x = 47,356,335,663.64
  5. Step 5: Solve for x
    x = 47,356,335,663.64/344,391.32
  6. Step 6: Final answer
    x = 137,507.34

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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.