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Finding the Fourth Proportional to 373,656, 515,645.28 and 239,520

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Solution

The fourth proportional to 373,656, 515,645.28 and 239,520 is: 330,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,656 : 515,645.28 = 239,520 : x
  2. Step 2: Convert to fraction form
    373,656/515,645.28 = 239,520/x
  3. Step 3: Cross multiply
    373,656x = 515,645.28 × 239,520
  4. Step 4: Simplify right side
    373,656x = 123,507,357,465.60
  5. Step 5: Solve for x
    x = 123,507,357,465.60/373,656
  6. Step 6: Final answer
    x = 330,537.60

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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.