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Finding the Fourth Proportional to 518,942.35, 778,408.86 and 163,956.36

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Solution

The fourth proportional to 518,942.35, 778,408.86 and 163,956.36 is: 245,933.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,942.35 : 778,408.86 = 163,956.36 : x
  2. Step 2: Convert to fraction form
    518,942.35/778,408.86 = 163,956.36/x
  3. Step 3: Cross multiply
    518,942.35x = 778,408.86 × 163,956.36
  4. Step 4: Simplify right side
    518,942.35x = 127,625,083,277.35
  5. Step 5: Solve for x
    x = 127,625,083,277.35/518,942.35
  6. Step 6: Final answer
    x = 245,933.07

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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.