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Finding the Fourth Proportional to 515,172.62, 710,944.08 and 285,734.46

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Solution

The fourth proportional to 515,172.62, 710,944.08 and 285,734.46 is: 394,316.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,172.62 : 710,944.08 = 285,734.46 : x
  2. Step 2: Convert to fraction form
    515,172.62/710,944.08 = 285,734.46/x
  3. Step 3: Cross multiply
    515,172.62x = 710,944.08 × 285,734.46
  4. Step 4: Simplify right side
    515,172.62x = 203,141,222,789.00
  5. Step 5: Solve for x
    x = 203,141,222,789.00/515,172.62
  6. Step 6: Final answer
    x = 394,316.81

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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.