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Finding the Fourth Proportional to 518,739.99, 778,178.07 and 203,155.89

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Solution

The fourth proportional to 518,739.99, 778,178.07 and 203,155.89 is: 304,760.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,739.99 : 778,178.07 = 203,155.89 : x
  2. Step 2: Convert to fraction form
    518,739.99/778,178.07 = 203,155.89/x
  3. Step 3: Cross multiply
    518,739.99x = 778,178.07 × 203,155.89
  4. Step 4: Simplify right side
    518,739.99x = 158,091,458,389.33
  5. Step 5: Solve for x
    x = 158,091,458,389.33/518,739.99
  6. Step 6: Final answer
    x = 304,760.50

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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.