Home / 282,185.17-389,406.76-154,857.49

Finding the Fourth Proportional to 282,185.17, 389,406.76 and 154,857.49

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Solution

The fourth proportional to 282,185.17, 389,406.76 and 154,857.49 is: 213,698.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,185.17 : 389,406.76 = 154,857.49 : x
  2. Step 2: Convert to fraction form
    282,185.17/389,406.76 = 154,857.49/x
  3. Step 3: Cross multiply
    282,185.17x = 389,406.76 × 154,857.49
  4. Step 4: Simplify right side
    282,185.17x = 60,302,553,442.63
  5. Step 5: Solve for x
    x = 60,302,553,442.63/282,185.17
  6. Step 6: Final answer
    x = 213,698.52

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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.