Home / 400,965.60-553,347.79-228,911.58

Finding the Fourth Proportional to 400,965.60, 553,347.79 and 228,911.58

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Solution

The fourth proportional to 400,965.60, 553,347.79 and 228,911.58 is: 315,906.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,965.60 : 553,347.79 = 228,911.58 : x
  2. Step 2: Convert to fraction form
    400,965.60/553,347.79 = 228,911.58/x
  3. Step 3: Cross multiply
    400,965.60x = 553,347.79 × 228,911.58
  4. Step 4: Simplify right side
    400,965.60x = 126,667,716,326.13
  5. Step 5: Solve for x
    x = 126,667,716,326.13/400,965.60
  6. Step 6: Final answer
    x = 315,906.69

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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.