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Finding the Fourth Proportional to 388,635.35, 536,302.63 and 216,544.43

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Solution

The fourth proportional to 388,635.35, 536,302.63 and 216,544.43 is: 298,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,635.35 : 536,302.63 = 216,544.43 : x
  2. Step 2: Convert to fraction form
    388,635.35/536,302.63 = 216,544.43/x
  3. Step 3: Cross multiply
    388,635.35x = 536,302.63 × 216,544.43
  4. Step 4: Simplify right side
    388,635.35x = 116,133,344,097.98
  5. Step 5: Solve for x
    x = 116,133,344,097.98/388,635.35
  6. Step 6: Final answer
    x = 298,823.42

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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.