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Finding the Fourth Proportional to 290,565.72, 436,504.71 and 172,314.63

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Solution

The fourth proportional to 290,565.72, 436,504.71 and 172,314.63 is: 258,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,565.72 : 436,504.71 = 172,314.63 : x
  2. Step 2: Convert to fraction form
    290,565.72/436,504.71 = 172,314.63/x
  3. Step 3: Cross multiply
    290,565.72x = 436,504.71 × 172,314.63
  4. Step 4: Simplify right side
    290,565.72x = 75,216,147,596.91
  5. Step 5: Solve for x
    x = 75,216,147,596.91/290,565.72
  6. Step 6: Final answer
    x = 258,861.05

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