Home / 280,725.39-387,440.55-178,718.27

Finding the Fourth Proportional to 280,725.39, 387,440.55 and 178,718.27

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Solution

The fourth proportional to 280,725.39, 387,440.55 and 178,718.27 is: 246,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,725.39 : 387,440.55 = 178,718.27 : x
  2. Step 2: Convert to fraction form
    280,725.39/387,440.55 = 178,718.27/x
  3. Step 3: Cross multiply
    280,725.39x = 387,440.55 × 178,718.27
  4. Step 4: Simplify right side
    280,725.39x = 69,242,702,886.65
  5. Step 5: Solve for x
    x = 69,242,702,886.65/280,725.39
  6. Step 6: Final answer
    x = 246,656.36

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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.