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Finding the Fourth Proportional to 390,518.94, 539,030.70 and 227,213.85

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Solution

The fourth proportional to 390,518.94, 539,030.70 and 227,213.85 is: 313,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,518.94 : 539,030.70 = 227,213.85 : x
  2. Step 2: Convert to fraction form
    390,518.94/539,030.70 = 227,213.85/x
  3. Step 3: Cross multiply
    390,518.94x = 539,030.70 × 227,213.85
  4. Step 4: Simplify right side
    390,518.94x = 122,475,240,615.20
  5. Step 5: Solve for x
    x = 122,475,240,615.20/390,518.94
  6. Step 6: Final answer
    x = 313,621.77

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