Home / 310,179.08-428,094.24-189,390.80

Finding the Fourth Proportional to 310,179.08, 428,094.24 and 189,390.80

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Solution

The fourth proportional to 310,179.08, 428,094.24 and 189,390.80 is: 261,388.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,179.08 : 428,094.24 = 189,390.80 : x
  2. Step 2: Convert to fraction form
    310,179.08/428,094.24 = 189,390.80/x
  3. Step 3: Cross multiply
    310,179.08x = 428,094.24 × 189,390.80
  4. Step 4: Simplify right side
    310,179.08x = 81,077,110,588.99
  5. Step 5: Solve for x
    x = 81,077,110,588.99/310,179.08
  6. Step 6: Final answer
    x = 261,388.07

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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.