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Finding the Fourth Proportional to 403,959.20, 605,938.80 and 167,763.20

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Solution

The fourth proportional to 403,959.20, 605,938.80 and 167,763.20 is: 251,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,959.20 : 605,938.80 = 167,763.20 : x
  2. Step 2: Convert to fraction form
    403,959.20/605,938.80 = 167,763.20/x
  3. Step 3: Cross multiply
    403,959.20x = 605,938.80 × 167,763.20
  4. Step 4: Simplify right side
    403,959.20x = 101,654,232,092.16
  5. Step 5: Solve for x
    x = 101,654,232,092.16/403,959.20
  6. Step 6: Final answer
    x = 251,644.80

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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.