Home / 305,902.20-458,853.30-261,615.45

Finding the Fourth Proportional to 305,902.20, 458,853.30 and 261,615.45

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Solution

The fourth proportional to 305,902.20, 458,853.30 and 261,615.45 is: 392,423.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,902.20 : 458,853.30 = 261,615.45 : x
  2. Step 2: Convert to fraction form
    305,902.20/458,853.30 = 261,615.45/x
  3. Step 3: Cross multiply
    305,902.20x = 458,853.30 × 261,615.45
  4. Step 4: Simplify right side
    305,902.20x = 120,043,112,563.49
  5. Step 5: Solve for x
    x = 120,043,112,563.49/305,902.20
  6. Step 6: Final answer
    x = 392,423.18

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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.