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Finding the Fourth Proportional to 404,811.20, 607,605.60 and 205,356.80

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Solution

The fourth proportional to 404,811.20, 607,605.60 and 205,356.80 is: 308,232.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,811.20 : 607,605.60 = 205,356.80 : x
  2. Step 2: Convert to fraction form
    404,811.20/607,605.60 = 205,356.80/x
  3. Step 3: Cross multiply
    404,811.20x = 607,605.60 × 205,356.80
  4. Step 4: Simplify right side
    404,811.20x = 124,775,941,678.08
  5. Step 5: Solve for x
    x = 124,775,941,678.08/404,811.20
  6. Step 6: Final answer
    x = 308,232.43

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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.