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Finding the Fourth Proportional to 343,667.52, 515,534.76 and 127,584.36

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Solution

The fourth proportional to 343,667.52, 515,534.76 and 127,584.36 is: 191,388.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,667.52 : 515,534.76 = 127,584.36 : x
  2. Step 2: Convert to fraction form
    343,667.52/515,534.76 = 127,584.36/x
  3. Step 3: Cross multiply
    343,667.52x = 515,534.76 × 127,584.36
  4. Step 4: Simplify right side
    343,667.52x = 65,774,172,412.35
  5. Step 5: Solve for x
    x = 65,774,172,412.35/343,667.52
  6. Step 6: Final answer
    x = 191,388.97

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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.