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Finding the Fourth Proportional to 345,363.44, 476,410.40 and 287,511.60

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Solution

The fourth proportional to 345,363.44, 476,410.40 and 287,511.60 is: 396,606.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,363.44 : 476,410.40 = 287,511.60 : x
  2. Step 2: Convert to fraction form
    345,363.44/476,410.40 = 287,511.60/x
  3. Step 3: Cross multiply
    345,363.44x = 476,410.40 × 287,511.60
  4. Step 4: Simplify right side
    345,363.44x = 136,973,516,360.64
  5. Step 5: Solve for x
    x = 136,973,516,360.64/345,363.44
  6. Step 6: Final answer
    x = 396,606.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.