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Finding the Fourth Proportional to 373,555.04, 515,505.28 and 203,789.20

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Solution

The fourth proportional to 373,555.04, 515,505.28 and 203,789.20 is: 281,228.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,555.04 : 515,505.28 = 203,789.20 : x
  2. Step 2: Convert to fraction form
    373,555.04/515,505.28 = 203,789.20/x
  3. Step 3: Cross multiply
    373,555.04x = 515,505.28 × 203,789.20
  4. Step 4: Simplify right side
    373,555.04x = 105,054,408,606.98
  5. Step 5: Solve for x
    x = 105,054,408,606.98/373,555.04
  6. Step 6: Final answer
    x = 281,228.73

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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.