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Finding the Fourth Proportional to 400,990.87, 553,297.06 and 228,830.23

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Solution

The fourth proportional to 400,990.87, 553,297.06 and 228,830.23 is: 315,745.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,990.87 : 553,297.06 = 228,830.23 : x
  2. Step 2: Convert to fraction form
    400,990.87/553,297.06 = 228,830.23/x
  3. Step 3: Cross multiply
    400,990.87x = 553,297.06 × 228,830.23
  4. Step 4: Simplify right side
    400,990.87x = 126,611,093,498.12
  5. Step 5: Solve for x
    x = 126,611,093,498.12/400,990.87
  6. Step 6: Final answer
    x = 315,745.58

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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.