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Finding the Fourth Proportional to 404,869.60, 607,671.60 and 205,328.80

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Solution

The fourth proportional to 404,869.60, 607,671.60 and 205,328.80 is: 308,179.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,869.60 : 607,671.60 = 205,328.80 : x
  2. Step 2: Convert to fraction form
    404,869.60/607,671.60 = 205,328.80/x
  3. Step 3: Cross multiply
    404,869.60x = 607,671.60 × 205,328.80
  4. Step 4: Simplify right side
    404,869.60x = 124,772,480,422.08
  5. Step 5: Solve for x
    x = 124,772,480,422.08/404,869.60
  6. Step 6: Final answer
    x = 308,179.42

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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.