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Finding the Fourth Proportional to 379,649.21, 569,631 and 166,306.91

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Solution

The fourth proportional to 379,649.21, 569,631 and 166,306.91 is: 249,529.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,649.21 : 569,631 = 166,306.91 : x
  2. Step 2: Convert to fraction form
    379,649.21/569,631 = 166,306.91/x
  3. Step 3: Cross multiply
    379,649.21x = 569,631 × 166,306.91
  4. Step 4: Simplify right side
    379,649.21x = 94,733,568,602.06
  5. Step 5: Solve for x
    x = 94,733,568,602.06/379,649.21
  6. Step 6: Final answer
    x = 249,529.22

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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.