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Finding the Fourth Proportional to 257,080.17, 385,616.11 and 70,091.67

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Solution

The fourth proportional to 257,080.17, 385,616.11 and 70,091.67 is: 105,136.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,080.17 : 385,616.11 = 70,091.67 : x
  2. Step 2: Convert to fraction form
    257,080.17/385,616.11 = 70,091.67/x
  3. Step 3: Cross multiply
    257,080.17x = 385,616.11 × 70,091.67
  4. Step 4: Simplify right side
    257,080.17x = 27,028,477,128.80
  5. Step 5: Solve for x
    x = 27,028,477,128.80/257,080.17
  6. Step 6: Final answer
    x = 105,136.37

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