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Finding the Fourth Proportional to 357,136.48, 535,707.96 and 90,897.31

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Solution

The fourth proportional to 357,136.48, 535,707.96 and 90,897.31 is: 136,346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,136.48 : 535,707.96 = 90,897.31 : x
  2. Step 2: Convert to fraction form
    357,136.48/535,707.96 = 90,897.31/x
  3. Step 3: Cross multiply
    357,136.48x = 535,707.96 × 90,897.31
  4. Step 4: Simplify right side
    357,136.48x = 48,694,412,509.59
  5. Step 5: Solve for x
    x = 48,694,412,509.59/357,136.48
  6. Step 6: Final answer
    x = 136,346.79

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