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Finding the Fourth Proportional to 421,585.74, 632,379.69 and 172,267.74

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Solution

The fourth proportional to 421,585.74, 632,379.69 and 172,267.74 is: 258,402.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,585.74 : 632,379.69 = 172,267.74 : x
  2. Step 2: Convert to fraction form
    421,585.74/632,379.69 = 172,267.74/x
  3. Step 3: Cross multiply
    421,585.74x = 632,379.69 × 172,267.74
  4. Step 4: Simplify right side
    421,585.74x = 108,938,620,018.20
  5. Step 5: Solve for x
    x = 108,938,620,018.20/421,585.74
  6. Step 6: Final answer
    x = 258,402.05

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