Home / 215,611.10-323,999.85-189,950.30

Finding the Fourth Proportional to 215,611.10, 323,999.85 and 189,950.30

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Solution

The fourth proportional to 215,611.10, 323,999.85 and 189,950.30 is: 285,439.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,611.10 : 323,999.85 = 189,950.30 : x
  2. Step 2: Convert to fraction form
    215,611.10/323,999.85 = 189,950.30/x
  3. Step 3: Cross multiply
    215,611.10x = 323,999.85 × 189,950.30
  4. Step 4: Simplify right side
    215,611.10x = 61,543,868,707.46
  5. Step 5: Solve for x
    x = 61,543,868,707.46/215,611.10
  6. Step 6: Final answer
    x = 285,439.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.