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Finding the Fourth Proportional to 354,697.44, 489,681.72 and 245,959.44

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Solution

The fourth proportional to 354,697.44, 489,681.72 and 245,959.44 is: 339,562.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,697.44 : 489,681.72 = 245,959.44 : x
  2. Step 2: Convert to fraction form
    354,697.44/489,681.72 = 245,959.44/x
  3. Step 3: Cross multiply
    354,697.44x = 489,681.72 × 245,959.44
  4. Step 4: Simplify right side
    354,697.44x = 120,441,841,629.44
  5. Step 5: Solve for x
    x = 120,441,841,629.44/354,697.44
  6. Step 6: Final answer
    x = 339,562.20

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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.