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Finding the Fourth Proportional to 515,279.73, 711,090.29 and 285,852.04

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Solution

The fourth proportional to 515,279.73, 711,090.29 and 285,852.04 is: 394,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,279.73 : 711,090.29 = 285,852.04 : x
  2. Step 2: Convert to fraction form
    515,279.73/711,090.29 = 285,852.04/x
  3. Step 3: Cross multiply
    515,279.73x = 711,090.29 × 285,852.04
  4. Step 4: Simplify right side
    515,279.73x = 203,266,608,957.60
  5. Step 5: Solve for x
    x = 203,266,608,957.60/515,279.73
  6. Step 6: Final answer
    x = 394,478.18

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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.