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Finding the Fourth Proportional to 518,940.42, 778,443.48 and 219,365.16

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Solution

The fourth proportional to 518,940.42, 778,443.48 and 219,365.16 is: 329,061.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,940.42 : 778,443.48 = 219,365.16 : x
  2. Step 2: Convert to fraction form
    518,940.42/778,443.48 = 219,365.16/x
  3. Step 3: Cross multiply
    518,940.42x = 778,443.48 × 219,365.16
  4. Step 4: Simplify right side
    518,940.42x = 170,763,381,309.89
  5. Step 5: Solve for x
    x = 170,763,381,309.89/518,940.42
  6. Step 6: Final answer
    x = 329,061.63

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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.