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Finding the Fourth Proportional to 515,193.92, 711,013.92 and 300,403.52

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Solution

The fourth proportional to 515,193.92, 711,013.92 and 300,403.52 is: 414,583.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,193.92 : 711,013.92 = 300,403.52 : x
  2. Step 2: Convert to fraction form
    515,193.92/711,013.92 = 300,403.52/x
  3. Step 3: Cross multiply
    515,193.92x = 711,013.92 × 300,403.52
  4. Step 4: Simplify right side
    515,193.92x = 213,591,084,337.00
  5. Step 5: Solve for x
    x = 213,591,084,337.00/515,193.92
  6. Step 6: Final answer
    x = 414,583.86

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1.5x scale

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.