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Finding the Fourth Proportional to 383,245.96, 528,895.78 and 213,480.20

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Solution

The fourth proportional to 383,245.96, 528,895.78 and 213,480.20 is: 294,611.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,245.96 : 528,895.78 = 213,480.20 : x
  2. Step 2: Convert to fraction form
    383,245.96/528,895.78 = 213,480.20/x
  3. Step 3: Cross multiply
    383,245.96x = 528,895.78 × 213,480.20
  4. Step 4: Simplify right side
    383,245.96x = 112,908,776,893.56
  5. Step 5: Solve for x
    x = 112,908,776,893.56/383,245.96
  6. Step 6: Final answer
    x = 294,611.79

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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.