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Finding the Fourth Proportional to 389,610.90, 584,435.55 and 202,986.90

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Solution

The fourth proportional to 389,610.90, 584,435.55 and 202,986.90 is: 304,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,610.90 : 584,435.55 = 202,986.90 : x
  2. Step 2: Convert to fraction form
    389,610.90/584,435.55 = 202,986.90/x
  3. Step 3: Cross multiply
    389,610.90x = 584,435.55 × 202,986.90
  4. Step 4: Simplify right side
    389,610.90x = 118,632,760,544.30
  5. Step 5: Solve for x
    x = 118,632,760,544.30/389,610.90
  6. Step 6: Final answer
    x = 304,490.35

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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.