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Finding the Fourth Proportional to 203,090.78, 280,326.01 and 131,475.63

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Solution

The fourth proportional to 203,090.78, 280,326.01 and 131,475.63 is: 181,475.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,090.78 : 280,326.01 = 131,475.63 : x
  2. Step 2: Convert to fraction form
    203,090.78/280,326.01 = 131,475.63/x
  3. Step 3: Cross multiply
    203,090.78x = 280,326.01 × 131,475.63
  4. Step 4: Simplify right side
    203,090.78x = 36,856,038,441.45
  5. Step 5: Solve for x
    x = 36,856,038,441.45/203,090.78
  6. Step 6: Final answer
    x = 181,475.69

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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.