Home / 485,110.80-727,666.20-219,171.60

Finding the Fourth Proportional to 485,110.80, 727,666.20 and 219,171.60

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Solution

The fourth proportional to 485,110.80, 727,666.20 and 219,171.60 is: 328,757.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,110.80 : 727,666.20 = 219,171.60 : x
  2. Step 2: Convert to fraction form
    485,110.80/727,666.20 = 219,171.60/x
  3. Step 3: Cross multiply
    485,110.80x = 727,666.20 × 219,171.60
  4. Step 4: Simplify right side
    485,110.80x = 159,483,765,319.92
  5. Step 5: Solve for x
    x = 159,483,765,319.92/485,110.80
  6. Step 6: Final answer
    x = 328,757.40

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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.