Home / 426,736.98-640,507.23-216,525.78

Finding the Fourth Proportional to 426,736.98, 640,507.23 and 216,525.78

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Solution

The fourth proportional to 426,736.98, 640,507.23 and 216,525.78 is: 324,992.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,736.98 : 640,507.23 = 216,525.78 : x
  2. Step 2: Convert to fraction form
    426,736.98/640,507.23 = 216,525.78/x
  3. Step 3: Cross multiply
    426,736.98x = 640,507.23 × 216,525.78
  4. Step 4: Simplify right side
    426,736.98x = 138,686,327,571.39
  5. Step 5: Solve for x
    x = 138,686,327,571.39/426,736.98
  6. Step 6: Final answer
    x = 324,992.52

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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.