Home / 288,999.11-398,685.70-187,057.31

Finding the Fourth Proportional to 288,999.11, 398,685.70 and 187,057.31

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Solution

The fourth proportional to 288,999.11, 398,685.70 and 187,057.31 is: 258,052.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,999.11 : 398,685.70 = 187,057.31 : x
  2. Step 2: Convert to fraction form
    288,999.11/398,685.70 = 187,057.31/x
  3. Step 3: Cross multiply
    288,999.11x = 398,685.70 × 187,057.31
  4. Step 4: Simplify right side
    288,999.11x = 74,577,076,087.45
  5. Step 5: Solve for x
    x = 74,577,076,087.45/288,999.11
  6. Step 6: Final answer
    x = 258,052.96

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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.