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Finding the Fourth Proportional to 413,999.60, 620,999.40 and 236,852.60

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Solution

The fourth proportional to 413,999.60, 620,999.40 and 236,852.60 is: 355,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,999.60 : 620,999.40 = 236,852.60 : x
  2. Step 2: Convert to fraction form
    413,999.60/620,999.40 = 236,852.60/x
  3. Step 3: Cross multiply
    413,999.60x = 620,999.40 × 236,852.60
  4. Step 4: Simplify right side
    413,999.60x = 147,085,322,488.44
  5. Step 5: Solve for x
    x = 147,085,322,488.44/413,999.60
  6. Step 6: Final answer
    x = 355,278.90

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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.