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Finding the Fourth Proportional to 390,532.20, 585,798.30 and 141,155.88

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Solution

The fourth proportional to 390,532.20, 585,798.30 and 141,155.88 is: 211,733.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,532.20 : 585,798.30 = 141,155.88 : x
  2. Step 2: Convert to fraction form
    390,532.20/585,798.30 = 141,155.88/x
  3. Step 3: Cross multiply
    390,532.20x = 585,798.30 × 141,155.88
  4. Step 4: Simplify right side
    390,532.20x = 82,688,874,539.00
  5. Step 5: Solve for x
    x = 82,688,874,539.00/390,532.20
  6. Step 6: Final answer
    x = 211,733.82

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