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Finding the Fourth Proportional to 309,907.62, 464,800.17 and 85,210.08

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Solution

The fourth proportional to 309,907.62, 464,800.17 and 85,210.08 is: 127,798.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,907.62 : 464,800.17 = 85,210.08 : x
  2. Step 2: Convert to fraction form
    309,907.62/464,800.17 = 85,210.08/x
  3. Step 3: Cross multiply
    309,907.62x = 464,800.17 × 85,210.08
  4. Step 4: Simplify right side
    309,907.62x = 39,605,659,669.71
  5. Step 5: Solve for x
    x = 39,605,659,669.71/309,907.62
  6. Step 6: Final answer
    x = 127,798.28

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