Home / 299,276.20-412,999.50-163,309.74

Finding the Fourth Proportional to 299,276.20, 412,999.50 and 163,309.74

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Solution

The fourth proportional to 299,276.20, 412,999.50 and 163,309.74 is: 225,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,276.20 : 412,999.50 = 163,309.74 : x
  2. Step 2: Convert to fraction form
    299,276.20/412,999.50 = 163,309.74/x
  3. Step 3: Cross multiply
    299,276.20x = 412,999.50 × 163,309.74
  4. Step 4: Simplify right side
    299,276.20x = 67,446,840,028.79
  5. Step 5: Solve for x
    x = 67,446,840,028.79/299,276.20
  6. Step 6: Final answer
    x = 225,366.53

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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.