Home / 309,967.45-427,645.07-202,599.38

Finding the Fourth Proportional to 309,967.45, 427,645.07 and 202,599.38

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Solution

The fourth proportional to 309,967.45, 427,645.07 and 202,599.38 is: 279,515.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,967.45 : 427,645.07 = 202,599.38 : x
  2. Step 2: Convert to fraction form
    309,967.45/427,645.07 = 202,599.38/x
  3. Step 3: Cross multiply
    309,967.45x = 427,645.07 × 202,599.38
  4. Step 4: Simplify right side
    309,967.45x = 86,640,626,857.92
  5. Step 5: Solve for x
    x = 86,640,626,857.92/309,967.45
  6. Step 6: Final answer
    x = 279,515.24

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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.