Home / 309,923.45-427,661.49-173,972.36

Finding the Fourth Proportional to 309,923.45, 427,661.49 and 173,972.36

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Solution

The fourth proportional to 309,923.45, 427,661.49 and 173,972.36 is: 240,063.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,923.45 : 427,661.49 = 173,972.36 : x
  2. Step 2: Convert to fraction form
    309,923.45/427,661.49 = 173,972.36/x
  3. Step 3: Cross multiply
    309,923.45x = 427,661.49 × 173,972.36
  4. Step 4: Simplify right side
    309,923.45x = 74,401,278,696.42
  5. Step 5: Solve for x
    x = 74,401,278,696.42/309,923.45
  6. Step 6: Final answer
    x = 240,063.41

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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.