Home / 309,215.07-426,709.35-173,254.75

Finding the Fourth Proportional to 309,215.07, 426,709.35 and 173,254.75

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Solution

The fourth proportional to 309,215.07, 426,709.35 and 173,254.75 is: 239,087.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,215.07 : 426,709.35 = 173,254.75 : x
  2. Step 2: Convert to fraction form
    309,215.07/426,709.35 = 173,254.75/x
  3. Step 3: Cross multiply
    309,215.07x = 426,709.35 × 173,254.75
  4. Step 4: Simplify right side
    309,215.07x = 73,929,419,623.37
  5. Step 5: Solve for x
    x = 73,929,419,623.37/309,215.07
  6. Step 6: Final answer
    x = 239,087.38

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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.