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Finding the Fourth Proportional to 376,974.74, 520,210.86 and 215,844.86

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Solution

The fourth proportional to 376,974.74, 520,210.86 and 215,844.86 is: 297,857.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,974.74 : 520,210.86 = 215,844.86 : x
  2. Step 2: Convert to fraction form
    376,974.74/520,210.86 = 215,844.86/x
  3. Step 3: Cross multiply
    376,974.74x = 520,210.86 × 215,844.86
  4. Step 4: Simplify right side
    376,974.74x = 112,284,840,247.18
  5. Step 5: Solve for x
    x = 112,284,840,247.18/376,974.74
  6. Step 6: Final answer
    x = 297,857.73

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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.