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Finding the Fourth Proportional to 404,527.20, 607,179.60 and 205,072.80

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Solution

The fourth proportional to 404,527.20, 607,179.60 and 205,072.80 is: 307,806.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,527.20 : 607,179.60 = 205,072.80 : x
  2. Step 2: Convert to fraction form
    404,527.20/607,179.60 = 205,072.80/x
  3. Step 3: Cross multiply
    404,527.20x = 607,179.60 × 205,072.80
  4. Step 4: Simplify right side
    404,527.20x = 124,516,020,674.88
  5. Step 5: Solve for x
    x = 124,516,020,674.88/404,527.20
  6. Step 6: Final answer
    x = 307,806.30

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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.