Home / 401,508.12-554,116.75-220,255.36

Finding the Fourth Proportional to 401,508.12, 554,116.75 and 220,255.36

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Solution

The fourth proportional to 401,508.12, 554,116.75 and 220,255.36 is: 303,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,508.12 : 554,116.75 = 220,255.36 : x
  2. Step 2: Convert to fraction form
    401,508.12/554,116.75 = 220,255.36/x
  3. Step 3: Cross multiply
    401,508.12x = 554,116.75 × 220,255.36
  4. Step 4: Simplify right side
    401,508.12x = 122,047,184,253.28
  5. Step 5: Solve for x
    x = 122,047,184,253.28/401,508.12
  6. Step 6: Final answer
    x = 303,971.90

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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.