Home / 280,992.37-387,761.59-153,665.23

Finding the Fourth Proportional to 280,992.37, 387,761.59 and 153,665.23

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Solution

The fourth proportional to 280,992.37, 387,761.59 and 153,665.23 is: 212,053.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,992.37 : 387,761.59 = 153,665.23 : x
  2. Step 2: Convert to fraction form
    280,992.37/387,761.59 = 153,665.23/x
  3. Step 3: Cross multiply
    280,992.37x = 387,761.59 × 153,665.23
  4. Step 4: Simplify right side
    280,992.37x = 59,585,472,987.76
  5. Step 5: Solve for x
    x = 59,585,472,987.76/280,992.37
  6. Step 6: Final answer
    x = 212,053.71

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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.