Home / 310,221.02-428,093.70-189,564.23

Finding the Fourth Proportional to 310,221.02, 428,093.70 and 189,564.23

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Solution

The fourth proportional to 310,221.02, 428,093.70 and 189,564.23 is: 261,591.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,221.02 : 428,093.70 = 189,564.23 : x
  2. Step 2: Convert to fraction form
    310,221.02/428,093.70 = 189,564.23/x
  3. Step 3: Cross multiply
    310,221.02x = 428,093.70 × 189,564.23
  4. Step 4: Simplify right side
    310,221.02x = 81,151,252,608.35
  5. Step 5: Solve for x
    x = 81,151,252,608.35/310,221.02
  6. Step 6: Final answer
    x = 261,591.73

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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.