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Finding the Fourth Proportional to 518,730.49, 777,908.58 and 219,234.25

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Solution

The fourth proportional to 518,730.49, 777,908.58 and 219,234.25 is: 328,772.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,730.49 : 777,908.58 = 219,234.25 : x
  2. Step 2: Convert to fraction form
    518,730.49/777,908.58 = 219,234.25/x
  3. Step 3: Cross multiply
    518,730.49x = 777,908.58 × 219,234.25
  4. Step 4: Simplify right side
    518,730.49x = 170,544,204,104.87
  5. Step 5: Solve for x
    x = 170,544,204,104.87/518,730.49
  6. Step 6: Final answer
    x = 328,772.28

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1.5x scale

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.