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Finding the Fourth Proportional to 385,839.63, 532,480.82 and 216,072.27

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Solution

The fourth proportional to 385,839.63, 532,480.82 and 216,072.27 is: 298,192.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,839.63 : 532,480.82 = 216,072.27 : x
  2. Step 2: Convert to fraction form
    385,839.63/532,480.82 = 216,072.27/x
  3. Step 3: Cross multiply
    385,839.63x = 532,480.82 × 216,072.27
  4. Step 4: Simplify right side
    385,839.63x = 115,054,338,428.50
  5. Step 5: Solve for x
    x = 115,054,338,428.50/385,839.63
  6. Step 6: Final answer
    x = 298,192.12

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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.