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Finding the Fourth Proportional to 656,696.54, 985,100.70 and 207,297.20

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Solution

The fourth proportional to 656,696.54, 985,100.70 and 207,297.20 is: 310,963.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,696.54 : 985,100.70 = 207,297.20 : x
  2. Step 2: Convert to fraction form
    656,696.54/985,100.70 = 207,297.20/x
  3. Step 3: Cross multiply
    656,696.54x = 985,100.70 × 207,297.20
  4. Step 4: Simplify right side
    656,696.54x = 204,208,616,828.04
  5. Step 5: Solve for x
    x = 204,208,616,828.04/656,696.54
  6. Step 6: Final answer
    x = 310,963.44

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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.