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Finding the Fourth Proportional to 309,653.02, 427,326.15 and 173,717.22

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Solution

The fourth proportional to 309,653.02, 427,326.15 and 173,717.22 is: 239,732.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,653.02 : 427,326.15 = 173,717.22 : x
  2. Step 2: Convert to fraction form
    309,653.02/427,326.15 = 173,717.22/x
  3. Step 3: Cross multiply
    309,653.02x = 427,326.15 × 173,717.22
  4. Step 4: Simplify right side
    309,653.02x = 74,233,910,811.30
  5. Step 5: Solve for x
    x = 74,233,910,811.30/309,653.02
  6. Step 6: Final answer
    x = 239,732.56

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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.