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Finding the Fourth Proportional to 203,430.60, 305,145.90 and 192,025.80

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Solution

The fourth proportional to 203,430.60, 305,145.90 and 192,025.80 is: 288,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,430.60 : 305,145.90 = 192,025.80 : x
  2. Step 2: Convert to fraction form
    203,430.60/305,145.90 = 192,025.80/x
  3. Step 3: Cross multiply
    203,430.60x = 305,145.90 × 192,025.80
  4. Step 4: Simplify right side
    203,430.60x = 58,595,885,564.22
  5. Step 5: Solve for x
    x = 58,595,885,564.22/203,430.60
  6. Step 6: Final answer
    x = 288,038.70

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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.