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Finding the Fourth Proportional to 203,801.70, 306,030.60 and 153,938.10

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Solution

The fourth proportional to 203,801.70, 306,030.60 and 153,938.10 is: 231,154.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,801.70 : 306,030.60 = 153,938.10 : x
  2. Step 2: Convert to fraction form
    203,801.70/306,030.60 = 153,938.10/x
  3. Step 3: Cross multiply
    203,801.70x = 306,030.60 × 153,938.10
  4. Step 4: Simplify right side
    203,801.70x = 47,109,769,105.86
  5. Step 5: Solve for x
    x = 47,109,769,105.86/203,801.70
  6. Step 6: Final answer
    x = 231,154.94

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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.