Home / 389,741.20-584,611.80-179,789.20

Finding the Fourth Proportional to 389,741.20, 584,611.80 and 179,789.20

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Solution

The fourth proportional to 389,741.20, 584,611.80 and 179,789.20 is: 269,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,741.20 : 584,611.80 = 179,789.20 : x
  2. Step 2: Convert to fraction form
    389,741.20/584,611.80 = 179,789.20/x
  3. Step 3: Cross multiply
    389,741.20x = 584,611.80 × 179,789.20
  4. Step 4: Simplify right side
    389,741.20x = 105,106,887,832.56
  5. Step 5: Solve for x
    x = 105,106,887,832.56/389,741.20
  6. Step 6: Final answer
    x = 269,683.80

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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.