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Finding the Fourth Proportional to 305,999.85, 458,999.78 and 294,335.85

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Solution

The fourth proportional to 305,999.85, 458,999.78 and 294,335.85 is: 441,503.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,999.85 : 458,999.78 = 294,335.85 : x
  2. Step 2: Convert to fraction form
    305,999.85/458,999.78 = 294,335.85/x
  3. Step 3: Cross multiply
    305,999.85x = 458,999.78 × 294,335.85
  4. Step 4: Simplify right side
    305,999.85x = 135,100,088,924.43
  5. Step 5: Solve for x
    x = 135,100,088,924.43/305,999.85
  6. Step 6: Final answer
    x = 441,503.78

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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.