Home / 282,086.12-389,279.04-154,768.70

Finding the Fourth Proportional to 282,086.12, 389,279.04 and 154,768.70

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Solution

The fourth proportional to 282,086.12, 389,279.04 and 154,768.70 is: 213,580.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,086.12 : 389,279.04 = 154,768.70 : x
  2. Step 2: Convert to fraction form
    282,086.12/389,279.04 = 154,768.70/x
  3. Step 3: Cross multiply
    282,086.12x = 389,279.04 × 154,768.70
  4. Step 4: Simplify right side
    282,086.12x = 60,248,210,958.05
  5. Step 5: Solve for x
    x = 60,248,210,958.05/282,086.12
  6. Step 6: Final answer
    x = 213,580.91

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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.