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Finding the Fourth Proportional to 203,040.40, 280,101.90 and 131,443.60

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Solution

The fourth proportional to 203,040.40, 280,101.90 and 131,443.60 is: 181,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,040.40 : 280,101.90 = 131,443.60 : x
  2. Step 2: Convert to fraction form
    203,040.40/280,101.90 = 131,443.60/x
  3. Step 3: Cross multiply
    203,040.40x = 280,101.90 × 131,443.60
  4. Step 4: Simplify right side
    203,040.40x = 36,817,602,102.84
  5. Step 5: Solve for x
    x = 36,817,602,102.84/203,040.40
  6. Step 6: Final answer
    x = 181,331.41

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1.5x scale

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.