Home / 420,917.70-631,372.23-243,311.70

Finding the Fourth Proportional to 420,917.70, 631,372.23 and 243,311.70

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Solution

The fourth proportional to 420,917.70, 631,372.23 and 243,311.70 is: 364,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,917.70 : 631,372.23 = 243,311.70 : x
  2. Step 2: Convert to fraction form
    420,917.70/631,372.23 = 243,311.70/x
  3. Step 3: Cross multiply
    420,917.70x = 631,372.23 × 243,311.70
  4. Step 4: Simplify right side
    420,917.70x = 153,620,250,614.09
  5. Step 5: Solve for x
    x = 153,620,250,614.09/420,917.70
  6. Step 6: Final answer
    x = 364,965.05

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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.