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Finding the Fourth Proportional to 376,356.15, 519,379.20 and 213,012.65

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Solution

The fourth proportional to 376,356.15, 519,379.20 and 213,012.65 is: 293,961.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,356.15 : 519,379.20 = 213,012.65 : x
  2. Step 2: Convert to fraction form
    376,356.15/519,379.20 = 213,012.65/x
  3. Step 3: Cross multiply
    376,356.15x = 519,379.20 × 213,012.65
  4. Step 4: Simplify right side
    376,356.15x = 110,634,337,149.98
  5. Step 5: Solve for x
    x = 110,634,337,149.98/376,356.15
  6. Step 6: Final answer
    x = 293,961.82

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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.