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Finding the Fourth Proportional to 402,559.29, 555,520.55 and 221,271.57

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Solution

The fourth proportional to 402,559.29, 555,520.55 and 221,271.57 is: 305,348.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,559.29 : 555,520.55 = 221,271.57 : x
  2. Step 2: Convert to fraction form
    402,559.29/555,520.55 = 221,271.57/x
  3. Step 3: Cross multiply
    402,559.29x = 555,520.55 × 221,271.57
  4. Step 4: Simplify right side
    402,559.29x = 122,920,903,159.41
  5. Step 5: Solve for x
    x = 122,920,903,159.41/402,559.29
  6. Step 6: Final answer
    x = 305,348.57

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