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Finding the Fourth Proportional to 228,098.20, 342,114.90 and 78,345.40

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Solution

The fourth proportional to 228,098.20, 342,114.90 and 78,345.40 is: 117,506.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,098.20 : 342,114.90 = 78,345.40 : x
  2. Step 2: Convert to fraction form
    228,098.20/342,114.90 = 78,345.40/x
  3. Step 3: Cross multiply
    228,098.20x = 342,114.90 × 78,345.40
  4. Step 4: Simplify right side
    228,098.20x = 26,803,128,686.46
  5. Step 5: Solve for x
    x = 26,803,128,686.46/228,098.20
  6. Step 6: Final answer
    x = 117,506.97

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