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Finding the Fourth Proportional to 519,064.60, 778,791.30 and 203,747.80

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Solution

The fourth proportional to 519,064.60, 778,791.30 and 203,747.80 is: 305,698.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,064.60 : 778,791.30 = 203,747.80 : x
  2. Step 2: Convert to fraction form
    519,064.60/778,791.30 = 203,747.80/x
  3. Step 3: Cross multiply
    519,064.60x = 778,791.30 × 203,747.80
  4. Step 4: Simplify right side
    519,064.60x = 158,677,014,034.14
  5. Step 5: Solve for x
    x = 158,677,014,034.14/519,064.60
  6. Step 6: Final answer
    x = 305,698.01

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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.