Home / 309,156.36-426,615.30-171,326.04

Finding the Fourth Proportional to 309,156.36, 426,615.30 and 171,326.04

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Solution

The fourth proportional to 309,156.36, 426,615.30 and 171,326.04 is: 236,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,156.36 : 426,615.30 = 171,326.04 : x
  2. Step 2: Convert to fraction form
    309,156.36/426,615.30 = 171,326.04/x
  3. Step 3: Cross multiply
    309,156.36x = 426,615.30 × 171,326.04
  4. Step 4: Simplify right side
    309,156.36x = 73,090,309,952.41
  5. Step 5: Solve for x
    x = 73,090,309,952.41/309,156.36
  6. Step 6: Final answer
    x = 236,418.59

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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.