Home / 427,964.20-641,654.70-203,432.20

Finding the Fourth Proportional to 427,964.20, 641,654.70 and 203,432.20

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Solution

The fourth proportional to 427,964.20, 641,654.70 and 203,432.20 is: 305,009.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,964.20 : 641,654.70 = 203,432.20 : x
  2. Step 2: Convert to fraction form
    427,964.20/641,654.70 = 203,432.20/x
  3. Step 3: Cross multiply
    427,964.20x = 641,654.70 × 203,432.20
  4. Step 4: Simplify right side
    427,964.20x = 130,533,227,261.34
  5. Step 5: Solve for x
    x = 130,533,227,261.34/427,964.20
  6. Step 6: Final answer
    x = 305,009.69

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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.