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Finding the Fourth Proportional to 402,312.72, 555,189.42 and 218,549.85

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Solution

The fourth proportional to 402,312.72, 555,189.42 and 218,549.85 is: 301,597.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,312.72 : 555,189.42 = 218,549.85 : x
  2. Step 2: Convert to fraction form
    402,312.72/555,189.42 = 218,549.85/x
  3. Step 3: Cross multiply
    402,312.72x = 555,189.42 × 218,549.85
  4. Step 4: Simplify right side
    402,312.72x = 121,336,564,462.59
  5. Step 5: Solve for x
    x = 121,336,564,462.59/402,312.72
  6. Step 6: Final answer
    x = 301,597.63

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