Home / 280,321.85-386,888.45-178,240.89

Finding the Fourth Proportional to 280,321.85, 386,888.45 and 178,240.89

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Solution

The fourth proportional to 280,321.85, 386,888.45 and 178,240.89 is: 246,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,321.85 : 386,888.45 = 178,240.89 : x
  2. Step 2: Convert to fraction form
    280,321.85/386,888.45 = 178,240.89/x
  3. Step 3: Cross multiply
    280,321.85x = 386,888.45 × 178,240.89
  4. Step 4: Simplify right side
    280,321.85x = 68,959,340,767.52
  5. Step 5: Solve for x
    x = 68,959,340,767.52/280,321.85
  6. Step 6: Final answer
    x = 246,000.60

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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.