Home / 278,018.18-383,630.74-197,416.29

Finding the Fourth Proportional to 278,018.18, 383,630.74 and 197,416.29

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Solution

The fourth proportional to 278,018.18, 383,630.74 and 197,416.29 is: 272,410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,018.18 : 383,630.74 = 197,416.29 : x
  2. Step 2: Convert to fraction form
    278,018.18/383,630.74 = 197,416.29/x
  3. Step 3: Cross multiply
    278,018.18x = 383,630.74 × 197,416.29
  4. Step 4: Simplify right side
    278,018.18x = 75,734,957,420.75
  5. Step 5: Solve for x
    x = 75,734,957,420.75/278,018.18
  6. Step 6: Final answer
    x = 272,410.09

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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.