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Finding the Fourth Proportional to 315,279.10, 435,076.95 and 172,040.86

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Solution

The fourth proportional to 315,279.10, 435,076.95 and 172,040.86 is: 237,411.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,279.10 : 435,076.95 = 172,040.86 : x
  2. Step 2: Convert to fraction form
    315,279.10/435,076.95 = 172,040.86/x
  3. Step 3: Cross multiply
    315,279.10x = 435,076.95 × 172,040.86
  4. Step 4: Simplify right side
    315,279.10x = 74,851,012,644.18
  5. Step 5: Solve for x
    x = 74,851,012,644.18/315,279.10
  6. Step 6: Final answer
    x = 237,411.91

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