Home / 280,369.14-387,048.20-172,998.33

Finding the Fourth Proportional to 280,369.14, 387,048.20 and 172,998.33

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Solution

The fourth proportional to 280,369.14, 387,048.20 and 172,998.33 is: 238,823.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,369.14 : 387,048.20 = 172,998.33 : x
  2. Step 2: Convert to fraction form
    280,369.14/387,048.20 = 172,998.33/x
  3. Step 3: Cross multiply
    280,369.14x = 387,048.20 × 172,998.33
  4. Step 4: Simplify right side
    280,369.14x = 66,958,691,364.51
  5. Step 5: Solve for x
    x = 66,958,691,364.51/280,369.14
  6. Step 6: Final answer
    x = 238,823.33

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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.