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Finding the Fourth Proportional to 404,619.60, 606,929.40 and 255,028.80

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Solution

The fourth proportional to 404,619.60, 606,929.40 and 255,028.80 is: 382,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,619.60 : 606,929.40 = 255,028.80 : x
  2. Step 2: Convert to fraction form
    404,619.60/606,929.40 = 255,028.80/x
  3. Step 3: Cross multiply
    404,619.60x = 606,929.40 × 255,028.80
  4. Step 4: Simplify right side
    404,619.60x = 154,784,476,566.72
  5. Step 5: Solve for x
    x = 154,784,476,566.72/404,619.60
  6. Step 6: Final answer
    x = 382,543.20

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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.