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Finding the Fourth Proportional to 401,741.48, 554,401.72 and 220,456.44

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Solution

The fourth proportional to 401,741.48, 554,401.72 and 220,456.44 is: 304,229.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,741.48 : 554,401.72 = 220,456.44 : x
  2. Step 2: Convert to fraction form
    401,741.48/554,401.72 = 220,456.44/x
  3. Step 3: Cross multiply
    401,741.48x = 554,401.72 × 220,456.44
  4. Step 4: Simplify right side
    401,741.48x = 122,221,429,521.08
  5. Step 5: Solve for x
    x = 122,221,429,521.08/401,741.48
  6. Step 6: Final answer
    x = 304,229.05

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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.