Home / 400,105.36-552,123.06-218,781.28

Finding the Fourth Proportional to 400,105.36, 552,123.06 and 218,781.28

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Solution

The fourth proportional to 400,105.36, 552,123.06 and 218,781.28 is: 301,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,105.36 : 552,123.06 = 218,781.28 : x
  2. Step 2: Convert to fraction form
    400,105.36/552,123.06 = 218,781.28/x
  3. Step 3: Cross multiply
    400,105.36x = 552,123.06 × 218,781.28
  4. Step 4: Simplify right side
    400,105.36x = 120,794,189,784.32
  5. Step 5: Solve for x
    x = 120,794,189,784.32/400,105.36
  6. Step 6: Final answer
    x = 301,905.95

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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.