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Finding the Fourth Proportional to 486,669, 730,003.50 and 154,245

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Solution

The fourth proportional to 486,669, 730,003.50 and 154,245 is: 231,367.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,669 : 730,003.50 = 154,245 : x
  2. Step 2: Convert to fraction form
    486,669/730,003.50 = 154,245/x
  3. Step 3: Cross multiply
    486,669x = 730,003.50 × 154,245
  4. Step 4: Simplify right side
    486,669x = 112,599,389,857.50
  5. Step 5: Solve for x
    x = 112,599,389,857.50/486,669
  6. Step 6: Final answer
    x = 231,367.50

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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.