Home / 203,311.10-280,578.24-112,666.86

Finding the Fourth Proportional to 203,311.10, 280,578.24 and 112,666.86

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Solution

The fourth proportional to 203,311.10, 280,578.24 and 112,666.86 is: 155,485.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,311.10 : 280,578.24 = 112,666.86 : x
  2. Step 2: Convert to fraction form
    203,311.10/280,578.24 = 112,666.86/x
  3. Step 3: Cross multiply
    203,311.10x = 280,578.24 × 112,666.86
  4. Step 4: Simplify right side
    203,311.10x = 31,611,869,285.13
  5. Step 5: Solve for x
    x = 31,611,869,285.13/203,311.10
  6. Step 6: Final answer
    x = 155,485.21

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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.