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Finding the Fourth Proportional to 404,890.68, 607,709.64 and 205,351.20

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Solution

The fourth proportional to 404,890.68, 607,709.64 and 205,351.20 is: 308,216.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,890.68 : 607,709.64 = 205,351.20 : x
  2. Step 2: Convert to fraction form
    404,890.68/607,709.64 = 205,351.20/x
  3. Step 3: Cross multiply
    404,890.68x = 607,709.64 × 205,351.20
  4. Step 4: Simplify right side
    404,890.68x = 124,793,904,595.64
  5. Step 5: Solve for x
    x = 124,793,904,595.64/404,890.68
  6. Step 6: Final answer
    x = 308,216.29

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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.