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Finding the Fourth Proportional to 373,744.80, 515,777.76 and 203,990.40

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Solution

The fourth proportional to 373,744.80, 515,777.76 and 203,990.40 is: 281,512.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,744.80 : 515,777.76 = 203,990.40 : x
  2. Step 2: Convert to fraction form
    373,744.80/515,777.76 = 203,990.40/x
  3. Step 3: Cross multiply
    373,744.80x = 515,777.76 × 203,990.40
  4. Step 4: Simplify right side
    373,744.80x = 105,213,711,573.50
  5. Step 5: Solve for x
    x = 105,213,711,573.50/373,744.80
  6. Step 6: Final answer
    x = 281,512.18

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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.