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Finding the Fourth Proportional to 402,818.73, 555,878.74 and 221,530.66

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Solution

The fourth proportional to 402,818.73, 555,878.74 and 221,530.66 is: 305,706.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,818.73 : 555,878.74 = 221,530.66 : x
  2. Step 2: Convert to fraction form
    402,818.73/555,878.74 = 221,530.66/x
  3. Step 3: Cross multiply
    402,818.73x = 555,878.74 × 221,530.66
  4. Step 4: Simplify right side
    402,818.73x = 123,144,184,152.17
  5. Step 5: Solve for x
    x = 123,144,184,152.17/402,818.73
  6. Step 6: Final answer
    x = 305,706.20

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