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Finding the Fourth Proportional to 393,097.76, 542,591.64 and 255,273.04

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Solution

The fourth proportional to 393,097.76, 542,591.64 and 255,273.04 is: 352,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,097.76 : 542,591.64 = 255,273.04 : x
  2. Step 2: Convert to fraction form
    393,097.76/542,591.64 = 255,273.04/x
  3. Step 3: Cross multiply
    393,097.76x = 542,591.64 × 255,273.04
  4. Step 4: Simplify right side
    393,097.76x = 138,509,017,421.39
  5. Step 5: Solve for x
    x = 138,509,017,421.39/393,097.76
  6. Step 6: Final answer
    x = 352,352.60

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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.