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Finding the Fourth Proportional to 387,556.74, 581,297.51 and 117,687.22

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Solution

The fourth proportional to 387,556.74, 581,297.51 and 117,687.22 is: 176,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,556.74 : 581,297.51 = 117,687.22 : x
  2. Step 2: Convert to fraction form
    387,556.74/581,297.51 = 117,687.22/x
  3. Step 3: Cross multiply
    387,556.74x = 581,297.51 × 117,687.22
  4. Step 4: Simplify right side
    387,556.74x = 68,411,286,785.80
  5. Step 5: Solve for x
    x = 68,411,286,785.80/387,556.74
  6. Step 6: Final answer
    x = 176,519.41

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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.