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Finding the Fourth Proportional to 486,348.74, 671,171.88 and 268,556.84

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Solution

The fourth proportional to 486,348.74, 671,171.88 and 268,556.84 is: 370,614.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,348.74 : 671,171.88 = 268,556.84 : x
  2. Step 2: Convert to fraction form
    486,348.74/671,171.88 = 268,556.84/x
  3. Step 3: Cross multiply
    486,348.74x = 671,171.88 × 268,556.84
  4. Step 4: Simplify right side
    486,348.74x = 180,247,799,189.66
  5. Step 5: Solve for x
    x = 180,247,799,189.66/486,348.74
  6. Step 6: Final answer
    x = 370,614.30

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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.