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Finding the Fourth Proportional to 486,331.97, 671,135.54 and 282,433.01

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Solution

The fourth proportional to 486,331.97, 671,135.54 and 282,433.01 is: 389,756.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,331.97 : 671,135.54 = 282,433.01 : x
  2. Step 2: Convert to fraction form
    486,331.97/671,135.54 = 282,433.01/x
  3. Step 3: Cross multiply
    486,331.97x = 671,135.54 × 282,433.01
  4. Step 4: Simplify right side
    486,331.97x = 189,550,825,912.33
  5. Step 5: Solve for x
    x = 189,550,825,912.33/486,331.97
  6. Step 6: Final answer
    x = 389,756.05

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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.