Home / 280,639.68-418,912.32-245,209.92

Finding the Fourth Proportional to 280,639.68, 418,912.32 and 245,209.92

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Solution

The fourth proportional to 280,639.68, 418,912.32 and 245,209.92 is: 366,026.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,639.68 : 418,912.32 = 245,209.92 : x
  2. Step 2: Convert to fraction form
    280,639.68/418,912.32 = 245,209.92/x
  3. Step 3: Cross multiply
    280,639.68x = 418,912.32 × 245,209.92
  4. Step 4: Simplify right side
    280,639.68x = 102,721,456,474.21
  5. Step 5: Solve for x
    x = 102,721,456,474.21/280,639.68
  6. Step 6: Final answer
    x = 366,026.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.