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Finding the Fourth Proportional to 518,015.57, 777,121.76 and 181,151.96

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Solution

The fourth proportional to 518,015.57, 777,121.76 and 181,151.96 is: 271,762.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,015.57 : 777,121.76 = 181,151.96 : x
  2. Step 2: Convert to fraction form
    518,015.57/777,121.76 = 181,151.96/x
  3. Step 3: Cross multiply
    518,015.57x = 777,121.76 × 181,151.96
  4. Step 4: Simplify right side
    518,015.57x = 140,777,126,549.92
  5. Step 5: Solve for x
    x = 140,777,126,549.92/518,015.57
  6. Step 6: Final answer
    x = 271,762.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.