Home / 401,513.55-554,104.20-220,233.12

Finding the Fourth Proportional to 401,513.55, 554,104.20 and 220,233.12

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Solution

The fourth proportional to 401,513.55, 554,104.20 and 220,233.12 is: 303,930.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,513.55 : 554,104.20 = 220,233.12 : x
  2. Step 2: Convert to fraction form
    401,513.55/554,104.20 = 220,233.12/x
  3. Step 3: Cross multiply
    401,513.55x = 554,104.20 × 220,233.12
  4. Step 4: Simplify right side
    401,513.55x = 122,032,096,771.10
  5. Step 5: Solve for x
    x = 122,032,096,771.10/401,513.55
  6. Step 6: Final answer
    x = 303,930.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.