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Finding the Fourth Proportional to 384,510.60, 530,639.76 and 221,166.84

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Solution

The fourth proportional to 384,510.60, 530,639.76 and 221,166.84 is: 305,218.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,510.60 : 530,639.76 = 221,166.84 : x
  2. Step 2: Convert to fraction form
    384,510.60/530,639.76 = 221,166.84/x
  3. Step 3: Cross multiply
    384,510.60x = 530,639.76 × 221,166.84
  4. Step 4: Simplify right side
    384,510.60x = 117,359,918,897.56
  5. Step 5: Solve for x
    x = 117,359,918,897.56/384,510.60
  6. Step 6: Final answer
    x = 305,218.94

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