Home / 427,927.20-641,647.80-161,696.40

Finding the Fourth Proportional to 427,927.20, 641,647.80 and 161,696.40

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Solution

The fourth proportional to 427,927.20, 641,647.80 and 161,696.40 is: 242,452.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,927.20 : 641,647.80 = 161,696.40 : x
  2. Step 2: Convert to fraction form
    427,927.20/641,647.80 = 161,696.40/x
  3. Step 3: Cross multiply
    427,927.20x = 641,647.80 × 161,696.40
  4. Step 4: Simplify right side
    427,927.20x = 103,752,139,327.92
  5. Step 5: Solve for x
    x = 103,752,139,327.92/427,927.20
  6. Step 6: Final answer
    x = 242,452.78

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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.