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Finding the Fourth Proportional to 368,391.72, 552,587.58 and 131,720.05

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Solution

The fourth proportional to 368,391.72, 552,587.58 and 131,720.05 is: 197,580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,391.72 : 552,587.58 = 131,720.05 : x
  2. Step 2: Convert to fraction form
    368,391.72/552,587.58 = 131,720.05/x
  3. Step 3: Cross multiply
    368,391.72x = 552,587.58 × 131,720.05
  4. Step 4: Simplify right side
    368,391.72x = 72,786,860,245.44
  5. Step 5: Solve for x
    x = 72,786,860,245.44/368,391.72
  6. Step 6: Final answer
    x = 197,580.07

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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.