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Finding the Fourth Proportional to 518,002.85, 777,109.75 and 218,484.54

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Solution

The fourth proportional to 518,002.85, 777,109.75 and 218,484.54 is: 327,771.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,002.85 : 777,109.75 = 218,484.54 : x
  2. Step 2: Convert to fraction form
    518,002.85/777,109.75 = 218,484.54/x
  3. Step 3: Cross multiply
    518,002.85x = 777,109.75 × 218,484.54
  4. Step 4: Simplify right side
    518,002.85x = 169,786,465,712.05
  5. Step 5: Solve for x
    x = 169,786,465,712.05/518,002.85
  6. Step 6: Final answer
    x = 327,771.30

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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.