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Finding the Fourth Proportional to 205,430.64, 308,306.64 and 105,586.80

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Solution

The fourth proportional to 205,430.64, 308,306.64 and 105,586.80 is: 158,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,430.64 : 308,306.64 = 105,586.80 : x
  2. Step 2: Convert to fraction form
    205,430.64/308,306.64 = 105,586.80/x
  3. Step 3: Cross multiply
    205,430.64x = 308,306.64 × 105,586.80
  4. Step 4: Simplify right side
    205,430.64x = 32,553,111,536.35
  5. Step 5: Solve for x
    x = 32,553,111,536.35/205,430.64
  6. Step 6: Final answer
    x = 158,462.79

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