Home / 282,170.19-389,399.64-154,857.63

Finding the Fourth Proportional to 282,170.19, 389,399.64 and 154,857.63

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Solution

The fourth proportional to 282,170.19, 389,399.64 and 154,857.63 is: 213,706.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,170.19 : 389,399.64 = 154,857.63 : x
  2. Step 2: Convert to fraction form
    282,170.19/389,399.64 = 154,857.63/x
  3. Step 3: Cross multiply
    282,170.19x = 389,399.64 × 154,857.63
  4. Step 4: Simplify right side
    282,170.19x = 60,301,505,373.25
  5. Step 5: Solve for x
    x = 60,301,505,373.25/282,170.19
  6. Step 6: Final answer
    x = 213,706.15

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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.