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Finding the Fourth Proportional to 318,552.29, 477,827.87 and 218,408.89

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Solution

The fourth proportional to 318,552.29, 477,827.87 and 218,408.89 is: 327,612.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,552.29 : 477,827.87 = 218,408.89 : x
  2. Step 2: Convert to fraction form
    318,552.29/477,827.87 = 218,408.89/x
  3. Step 3: Cross multiply
    318,552.29x = 477,827.87 × 218,408.89
  4. Step 4: Simplify right side
    318,552.29x = 104,361,852,411.15
  5. Step 5: Solve for x
    x = 104,361,852,411.15/318,552.29
  6. Step 6: Final answer
    x = 327,612.94

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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.