Home / 278,000.64-383,636.73-157,137.68

Finding the Fourth Proportional to 278,000.64, 383,636.73 and 157,137.68

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Solution

The fourth proportional to 278,000.64, 383,636.73 and 157,137.68 is: 216,847.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,000.64 : 383,636.73 = 157,137.68 : x
  2. Step 2: Convert to fraction form
    278,000.64/383,636.73 = 157,137.68/x
  3. Step 3: Cross multiply
    278,000.64x = 383,636.73 × 157,137.68
  4. Step 4: Simplify right side
    278,000.64x = 60,283,783,796.80
  5. Step 5: Solve for x
    x = 60,283,783,796.80/278,000.64
  6. Step 6: Final answer
    x = 216,847.64

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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.