Home / 400,835.88-553,016.21-228,630.11

Finding the Fourth Proportional to 400,835.88, 553,016.21 and 228,630.11

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Solution

The fourth proportional to 400,835.88, 553,016.21 and 228,630.11 is: 315,431.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,835.88 : 553,016.21 = 228,630.11 : x
  2. Step 2: Convert to fraction form
    400,835.88/553,016.21 = 228,630.11/x
  3. Step 3: Cross multiply
    400,835.88x = 553,016.21 × 228,630.11
  4. Step 4: Simplify right side
    400,835.88x = 126,436,153,015.85
  5. Step 5: Solve for x
    x = 126,436,153,015.85/400,835.88
  6. Step 6: Final answer
    x = 315,431.23

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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.