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Finding the Fourth Proportional to 203,830.48, 305,628 and 79,025.68

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Solution

The fourth proportional to 203,830.48, 305,628 and 79,025.68 is: 118,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,830.48 : 305,628 = 79,025.68 : x
  2. Step 2: Convert to fraction form
    203,830.48/305,628 = 79,025.68/x
  3. Step 3: Cross multiply
    203,830.48x = 305,628 × 79,025.68
  4. Step 4: Simplify right side
    203,830.48x = 24,152,460,527.04
  5. Step 5: Solve for x
    x = 24,152,460,527.04/203,830.48
  6. Step 6: Final answer
    x = 118,492.88

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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.