Home / 485,021.28-727,613.46-218,775.36

Finding the Fourth Proportional to 485,021.28, 727,613.46 and 218,775.36

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Solution

The fourth proportional to 485,021.28, 727,613.46 and 218,775.36 is: 328,199.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,021.28 : 727,613.46 = 218,775.36 : x
  2. Step 2: Convert to fraction form
    485,021.28/727,613.46 = 218,775.36/x
  3. Step 3: Cross multiply
    485,021.28x = 727,613.46 × 218,775.36
  4. Step 4: Simplify right side
    485,021.28x = 159,183,896,652.35
  5. Step 5: Solve for x
    x = 159,183,896,652.35/485,021.28
  6. Step 6: Final answer
    x = 328,199.82

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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.