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Finding the Fourth Proportional to 354,933.07, 489,850.59 and 202,008.45

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Solution

The fourth proportional to 354,933.07, 489,850.59 and 202,008.45 is: 278,796.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,933.07 : 489,850.59 = 202,008.45 : x
  2. Step 2: Convert to fraction form
    354,933.07/489,850.59 = 202,008.45/x
  3. Step 3: Cross multiply
    354,933.07x = 489,850.59 × 202,008.45
  4. Step 4: Simplify right side
    354,933.07x = 98,953,955,968.23
  5. Step 5: Solve for x
    x = 98,953,955,968.23/354,933.07
  6. Step 6: Final answer
    x = 278,796.10

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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.