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Finding the Fourth Proportional to 515,240.52, 710,981.10 and 285,793.80

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Solution

The fourth proportional to 515,240.52, 710,981.10 and 285,793.80 is: 394,367.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,240.52 : 710,981.10 = 285,793.80 : x
  2. Step 2: Convert to fraction form
    515,240.52/710,981.10 = 285,793.80/x
  3. Step 3: Cross multiply
    515,240.52x = 710,981.10 × 285,793.80
  4. Step 4: Simplify right side
    515,240.52x = 203,193,990,297.18
  5. Step 5: Solve for x
    x = 203,193,990,297.18/515,240.52
  6. Step 6: Final answer
    x = 394,367.26

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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.