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Finding the Fourth Proportional to 261,789.20, 392,683.80 and 242,543.60

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Solution

The fourth proportional to 261,789.20, 392,683.80 and 242,543.60 is: 363,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,789.20 : 392,683.80 = 242,543.60 : x
  2. Step 2: Convert to fraction form
    261,789.20/392,683.80 = 242,543.60/x
  3. Step 3: Cross multiply
    261,789.20x = 392,683.80 × 242,543.60
  4. Step 4: Simplify right side
    261,789.20x = 95,242,942,513.68
  5. Step 5: Solve for x
    x = 95,242,942,513.68/261,789.20
  6. Step 6: Final answer
    x = 363,815.40

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