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Finding the Fourth Proportional to 625,696.35, 938,544.53 and 204,985.95

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Solution

The fourth proportional to 625,696.35, 938,544.53 and 204,985.95 is: 307,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,696.35 : 938,544.53 = 204,985.95 : x
  2. Step 2: Convert to fraction form
    625,696.35/938,544.53 = 204,985.95/x
  3. Step 3: Cross multiply
    625,696.35x = 938,544.53 × 204,985.95
  4. Step 4: Simplify right side
    625,696.35x = 192,388,441,074.42
  5. Step 5: Solve for x
    x = 192,388,441,074.42/625,696.35
  6. Step 6: Final answer
    x = 307,478.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.