Home / 282,105.87-389,306.61-154,782.39

Finding the Fourth Proportional to 282,105.87, 389,306.61 and 154,782.39

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Solution

The fourth proportional to 282,105.87, 389,306.61 and 154,782.39 is: 213,599.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,105.87 : 389,306.61 = 154,782.39 : x
  2. Step 2: Convert to fraction form
    282,105.87/389,306.61 = 154,782.39/x
  3. Step 3: Cross multiply
    282,105.87x = 389,306.61 × 154,782.39
  4. Step 4: Simplify right side
    282,105.87x = 60,257,807,538.60
  5. Step 5: Solve for x
    x = 60,257,807,538.60/282,105.87
  6. Step 6: Final answer
    x = 213,599.98

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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.