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Finding the Fourth Proportional to 377,620.86, 520,851.39 and 248,518.20

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Solution

The fourth proportional to 377,620.86, 520,851.39 and 248,518.20 is: 342,780.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,620.86 : 520,851.39 = 248,518.20 : x
  2. Step 2: Convert to fraction form
    377,620.86/520,851.39 = 248,518.20/x
  3. Step 3: Cross multiply
    377,620.86x = 520,851.39 × 248,518.20
  4. Step 4: Simplify right side
    377,620.86x = 129,441,049,910.30
  5. Step 5: Solve for x
    x = 129,441,049,910.30/377,620.86
  6. Step 6: Final answer
    x = 342,780.45

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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.