Home / 280,936.92-387,694.23-153,612.41

Finding the Fourth Proportional to 280,936.92, 387,694.23 and 153,612.41

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Solution

The fourth proportional to 280,936.92, 387,694.23 and 153,612.41 is: 211,985.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,936.92 : 387,694.23 = 153,612.41 : x
  2. Step 2: Convert to fraction form
    280,936.92/387,694.23 = 153,612.41/x
  3. Step 3: Cross multiply
    280,936.92x = 387,694.23 × 153,612.41
  4. Step 4: Simplify right side
    280,936.92x = 59,554,645,013.39
  5. Step 5: Solve for x
    x = 59,554,645,013.39/280,936.92
  6. Step 6: Final answer
    x = 211,985.83

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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.