Home / 428,034.20-641,501.64-161,477.10

Finding the Fourth Proportional to 428,034.20, 641,501.64 and 161,477.10

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Solution

The fourth proportional to 428,034.20, 641,501.64 and 161,477.10 is: 242,008.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,034.20 : 641,501.64 = 161,477.10 : x
  2. Step 2: Convert to fraction form
    428,034.20/641,501.64 = 161,477.10/x
  3. Step 3: Cross multiply
    428,034.20x = 641,501.64 × 161,477.10
  4. Step 4: Simplify right side
    428,034.20x = 103,587,824,472.44
  5. Step 5: Solve for x
    x = 103,587,824,472.44/428,034.20
  6. Step 6: Final answer
    x = 242,008.29

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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.