Home / 282,180.78-389,414.16-154,868.22

Finding the Fourth Proportional to 282,180.78, 389,414.16 and 154,868.22

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Solution

The fourth proportional to 282,180.78, 389,414.16 and 154,868.22 is: 213,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,180.78 : 389,414.16 = 154,868.22 : x
  2. Step 2: Convert to fraction form
    282,180.78/389,414.16 = 154,868.22/x
  3. Step 3: Cross multiply
    282,180.78x = 389,414.16 × 154,868.22
  4. Step 4: Simplify right side
    282,180.78x = 60,307,877,802.00
  5. Step 5: Solve for x
    x = 60,307,877,802.00/282,180.78
  6. Step 6: Final answer
    x = 213,720.71

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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.