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Finding the Fourth Proportional to 401,066.76, 553,472.14 and 222,218.76

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Solution

The fourth proportional to 401,066.76, 553,472.14 and 222,218.76 is: 306,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,066.76 : 553,472.14 = 222,218.76 : x
  2. Step 2: Convert to fraction form
    401,066.76/553,472.14 = 222,218.76/x
  3. Step 3: Cross multiply
    401,066.76x = 553,472.14 × 222,218.76
  4. Step 4: Simplify right side
    401,066.76x = 122,991,892,645.35
  5. Step 5: Solve for x
    x = 122,991,892,645.35/401,066.76
  6. Step 6: Final answer
    x = 306,661.90

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Double scale
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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.