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Finding the Fourth Proportional to 376,885.32, 520,121.66 and 213,573.50

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Solution

The fourth proportional to 376,885.32, 520,121.66 and 213,573.50 is: 294,742.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,885.32 : 520,121.66 = 213,573.50 : x
  2. Step 2: Convert to fraction form
    376,885.32/520,121.66 = 213,573.50/x
  3. Step 3: Cross multiply
    376,885.32x = 520,121.66 × 213,573.50
  4. Step 4: Simplify right side
    376,885.32x = 111,084,199,683.53
  5. Step 5: Solve for x
    x = 111,084,199,683.53/376,885.32
  6. Step 6: Final answer
    x = 294,742.71

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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.