Home / 385,255.92-531,624.32-215,457.24

Finding the Fourth Proportional to 385,255.92, 531,624.32 and 215,457.24

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Solution

The fourth proportional to 385,255.92, 531,624.32 and 215,457.24 is: 297,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,255.92 : 531,624.32 = 215,457.24 : x
  2. Step 2: Convert to fraction form
    385,255.92/531,624.32 = 215,457.24/x
  3. Step 3: Cross multiply
    385,255.92x = 531,624.32 × 215,457.24
  4. Step 4: Simplify right side
    385,255.92x = 114,542,308,704.08
  5. Step 5: Solve for x
    x = 114,542,308,704.08/385,255.92
  6. Step 6: Final answer
    x = 297,314.86

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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.