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Finding the Fourth Proportional to 421,317.05, 581,721.95 and 260,392.73

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Solution

The fourth proportional to 421,317.05, 581,721.95 and 260,392.73 is: 359,530.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,317.05 : 581,721.95 = 260,392.73 : x
  2. Step 2: Convert to fraction form
    421,317.05/581,721.95 = 260,392.73/x
  3. Step 3: Cross multiply
    421,317.05x = 581,721.95 × 260,392.73
  4. Step 4: Simplify right side
    421,317.05x = 151,476,164,403.80
  5. Step 5: Solve for x
    x = 151,476,164,403.80/421,317.05
  6. Step 6: Final answer
    x = 359,530.11

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