Home / 309,531.73-427,171.58-173,609.28

Finding the Fourth Proportional to 309,531.73, 427,171.58 and 173,609.28

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Solution

The fourth proportional to 309,531.73, 427,171.58 and 173,609.28 is: 239,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,531.73 : 427,171.58 = 173,609.28 : x
  2. Step 2: Convert to fraction form
    309,531.73/427,171.58 = 173,609.28/x
  3. Step 3: Cross multiply
    309,531.73x = 427,171.58 × 173,609.28
  4. Step 4: Simplify right side
    309,531.73x = 74,160,950,440.26
  5. Step 5: Solve for x
    x = 74,160,950,440.26/309,531.73
  6. Step 6: Final answer
    x = 239,590.79

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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.