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Finding the Fourth Proportional to 203,475.90, 305,505.45 and 153,903.90

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Solution

The fourth proportional to 203,475.90, 305,505.45 and 153,903.90 is: 231,076.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,475.90 : 305,505.45 = 153,903.90 : x
  2. Step 2: Convert to fraction form
    203,475.90/305,505.45 = 153,903.90/x
  3. Step 3: Cross multiply
    203,475.90x = 305,505.45 × 153,903.90
  4. Step 4: Simplify right side
    203,475.90x = 47,018,480,226.26
  5. Step 5: Solve for x
    x = 47,018,480,226.26/203,475.90
  6. Step 6: Final answer
    x = 231,076.41

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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.