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Finding the Fourth Proportional to 280,838.94, 421,258.41 and 93,850.44

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Solution

The fourth proportional to 280,838.94, 421,258.41 and 93,850.44 is: 140,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,838.94 : 421,258.41 = 93,850.44 : x
  2. Step 2: Convert to fraction form
    280,838.94/421,258.41 = 93,850.44/x
  3. Step 3: Cross multiply
    280,838.94x = 421,258.41 × 93,850.44
  4. Step 4: Simplify right side
    280,838.94x = 39,535,287,132.20
  5. Step 5: Solve for x
    x = 39,535,287,132.20/280,838.94
  6. Step 6: Final answer
    x = 140,775.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.