Home / 310,236.20-428,166.26-189,352.36

Finding the Fourth Proportional to 310,236.20, 428,166.26 and 189,352.36

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Solution

The fourth proportional to 310,236.20, 428,166.26 and 189,352.36 is: 261,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,236.20 : 428,166.26 = 189,352.36 : x
  2. Step 2: Convert to fraction form
    310,236.20/428,166.26 = 189,352.36/x
  3. Step 3: Cross multiply
    310,236.20x = 428,166.26 × 189,352.36
  4. Step 4: Simplify right side
    310,236.20x = 81,074,291,803.37
  5. Step 5: Solve for x
    x = 81,074,291,803.37/310,236.20
  6. Step 6: Final answer
    x = 261,330.86

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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.