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Finding the Fourth Proportional to 404,577.20, 606,865.80 and 205,511.60

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Solution

The fourth proportional to 404,577.20, 606,865.80 and 205,511.60 is: 308,267.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,577.20 : 606,865.80 = 205,511.60 : x
  2. Step 2: Convert to fraction form
    404,577.20/606,865.80 = 205,511.60/x
  3. Step 3: Cross multiply
    404,577.20x = 606,865.80 × 205,511.60
  4. Step 4: Simplify right side
    404,577.20x = 124,717,961,543.28
  5. Step 5: Solve for x
    x = 124,717,961,543.28/404,577.20
  6. Step 6: Final answer
    x = 308,267.40

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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.