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Finding the Fourth Proportional to 515,255.48, 711,093.84 and 285,835.40

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Solution

The fourth proportional to 515,255.48, 711,093.84 and 285,835.40 is: 394,475.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,255.48 : 711,093.84 = 285,835.40 : x
  2. Step 2: Convert to fraction form
    515,255.48/711,093.84 = 285,835.40/x
  3. Step 3: Cross multiply
    515,255.48x = 711,093.84 × 285,835.40
  4. Step 4: Simplify right side
    515,255.48x = 203,255,792,193.94
  5. Step 5: Solve for x
    x = 203,255,792,193.94/515,255.48
  6. Step 6: Final answer
    x = 394,475.75

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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.