Home / 427,467.20-641,200.80-161,236.40

Finding the Fourth Proportional to 427,467.20, 641,200.80 and 161,236.40

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Solution

The fourth proportional to 427,467.20, 641,200.80 and 161,236.40 is: 241,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,467.20 : 641,200.80 = 161,236.40 : x
  2. Step 2: Convert to fraction form
    427,467.20/641,200.80 = 161,236.40/x
  3. Step 3: Cross multiply
    427,467.20x = 641,200.80 × 161,236.40
  4. Step 4: Simplify right side
    427,467.20x = 103,384,908,669.12
  5. Step 5: Solve for x
    x = 103,384,908,669.12/427,467.20
  6. Step 6: Final answer
    x = 241,854.60

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1.5x scale

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.