Home / 280,520.88-387,120.24-153,196.47

Finding the Fourth Proportional to 280,520.88, 387,120.24 and 153,196.47

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Solution

The fourth proportional to 280,520.88, 387,120.24 and 153,196.47 is: 211,411.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,520.88 : 387,120.24 = 153,196.47 : x
  2. Step 2: Convert to fraction form
    280,520.88/387,120.24 = 153,196.47/x
  3. Step 3: Cross multiply
    280,520.88x = 387,120.24 × 153,196.47
  4. Step 4: Simplify right side
    280,520.88x = 59,305,454,233.55
  5. Step 5: Solve for x
    x = 59,305,454,233.55/280,520.88
  6. Step 6: Final answer
    x = 211,411.91

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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.