Home / 282,112.24-389,340.12-154,812.64

Finding the Fourth Proportional to 282,112.24, 389,340.12 and 154,812.64

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Solution

The fourth proportional to 282,112.24, 389,340.12 and 154,812.64 is: 213,655.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,112.24 : 389,340.12 = 154,812.64 : x
  2. Step 2: Convert to fraction form
    282,112.24/389,340.12 = 154,812.64/x
  3. Step 3: Cross multiply
    282,112.24x = 389,340.12 × 154,812.64
  4. Step 4: Simplify right side
    282,112.24x = 60,274,771,835.12
  5. Step 5: Solve for x
    x = 60,274,771,835.12/282,112.24
  6. Step 6: Final answer
    x = 213,655.29

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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.