Home / 427,681.20-641,025.72-161,271.12

Finding the Fourth Proportional to 427,681.20, 641,025.72 and 161,271.12

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Solution

The fourth proportional to 427,681.20, 641,025.72 and 161,271.12 is: 241,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,681.20 : 641,025.72 = 161,271.12 : x
  2. Step 2: Convert to fraction form
    427,681.20/641,025.72 = 161,271.12/x
  3. Step 3: Cross multiply
    427,681.20x = 641,025.72 × 161,271.12
  4. Step 4: Simplify right side
    427,681.20x = 103,378,935,813.21
  5. Step 5: Solve for x
    x = 103,378,935,813.21/427,681.20
  6. Step 6: Final answer
    x = 241,719.62

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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.