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Finding the Fourth Proportional to 518,866.02, 778,200.61 and 219,555.63

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Solution

The fourth proportional to 518,866.02, 778,200.61 and 219,555.63 is: 329,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,866.02 : 778,200.61 = 219,555.63 : x
  2. Step 2: Convert to fraction form
    518,866.02/778,200.61 = 219,555.63/x
  3. Step 3: Cross multiply
    518,866.02x = 778,200.61 × 219,555.63
  4. Step 4: Simplify right side
    518,866.02x = 170,858,325,194.93
  5. Step 5: Solve for x
    x = 170,858,325,194.93/518,866.02
  6. Step 6: Final answer
    x = 329,291.80

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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.