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Finding the Fourth Proportional to 388,655.82, 536,352.03 and 218,896.02

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Solution

The fourth proportional to 388,655.82, 536,352.03 and 218,896.02 is: 302,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,655.82 : 536,352.03 = 218,896.02 : x
  2. Step 2: Convert to fraction form
    388,655.82/536,352.03 = 218,896.02/x
  3. Step 3: Cross multiply
    388,655.82x = 536,352.03 × 218,896.02
  4. Step 4: Simplify right side
    388,655.82x = 117,405,324,685.92
  5. Step 5: Solve for x
    x = 117,405,324,685.92/388,655.82
  6. Step 6: Final answer
    x = 302,080.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.