Home / 282,120.12-389,328.42-154,800.30

Finding the Fourth Proportional to 282,120.12, 389,328.42 and 154,800.30

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Solution

The fourth proportional to 282,120.12, 389,328.42 and 154,800.30 is: 213,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,120.12 : 389,328.42 = 154,800.30 : x
  2. Step 2: Convert to fraction form
    282,120.12/389,328.42 = 154,800.30/x
  3. Step 3: Cross multiply
    282,120.12x = 389,328.42 × 154,800.30
  4. Step 4: Simplify right side
    282,120.12x = 60,268,156,214.53
  5. Step 5: Solve for x
    x = 60,268,156,214.53/282,120.12
  6. Step 6: Final answer
    x = 213,625.87

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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.