Home / 309,929.49-427,679.22-173,937.17

Finding the Fourth Proportional to 309,929.49, 427,679.22 and 173,937.17

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Solution

The fourth proportional to 309,929.49, 427,679.22 and 173,937.17 is: 240,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,929.49 : 427,679.22 = 173,937.17 : x
  2. Step 2: Convert to fraction form
    309,929.49/427,679.22 = 173,937.17/x
  3. Step 3: Cross multiply
    309,929.49x = 427,679.22 × 173,937.17
  4. Step 4: Simplify right side
    309,929.49x = 74,389,313,402.43
  5. Step 5: Solve for x
    x = 74,389,313,402.43/309,929.49
  6. Step 6: Final answer
    x = 240,020.12

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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.