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Finding the Fourth Proportional to 515,207.94, 710,989.44 and 285,749.25

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Solution

The fourth proportional to 515,207.94, 710,989.44 and 285,749.25 is: 394,335.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,207.94 : 710,989.44 = 285,749.25 : x
  2. Step 2: Convert to fraction form
    515,207.94/710,989.44 = 285,749.25/x
  3. Step 3: Cross multiply
    515,207.94x = 710,989.44 × 285,749.25
  4. Step 4: Simplify right side
    515,207.94x = 203,164,699,237.92
  5. Step 5: Solve for x
    x = 203,164,699,237.92/515,207.94
  6. Step 6: Final answer
    x = 394,335.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.