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Finding the Fourth Proportional to 415,627.20, 622,519.20 and 249,739.20

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Solution

The fourth proportional to 415,627.20, 622,519.20 and 249,739.20 is: 374,055.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,627.20 : 622,519.20 = 249,739.20 : x
  2. Step 2: Convert to fraction form
    415,627.20/622,519.20 = 249,739.20/x
  3. Step 3: Cross multiply
    415,627.20x = 622,519.20 × 249,739.20
  4. Step 4: Simplify right side
    415,627.20x = 155,467,446,992.64
  5. Step 5: Solve for x
    x = 155,467,446,992.64/415,627.20
  6. Step 6: Final answer
    x = 374,055.04

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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.