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Finding the Fourth Proportional to 305,887.57, 458,313.55 and 187,311.26

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Solution

The fourth proportional to 305,887.57, 458,313.55 and 187,311.26 is: 280,649.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,887.57 : 458,313.55 = 187,311.26 : x
  2. Step 2: Convert to fraction form
    305,887.57/458,313.55 = 187,311.26/x
  3. Step 3: Cross multiply
    305,887.57x = 458,313.55 × 187,311.26
  4. Step 4: Simplify right side
    305,887.57x = 85,847,288,525.57
  5. Step 5: Solve for x
    x = 85,847,288,525.57/305,887.57
  6. Step 6: Final answer
    x = 280,649.81

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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.