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Finding the Fourth Proportional to 376,197.30, 519,152.16 and 215,055.78

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Solution

The fourth proportional to 376,197.30, 519,152.16 and 215,055.78 is: 296,776.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,197.30 : 519,152.16 = 215,055.78 : x
  2. Step 2: Convert to fraction form
    376,197.30/519,152.16 = 215,055.78/x
  3. Step 3: Cross multiply
    376,197.30x = 519,152.16 × 215,055.78
  4. Step 4: Simplify right side
    376,197.30x = 111,646,672,707.49
  5. Step 5: Solve for x
    x = 111,646,672,707.49/376,197.30
  6. Step 6: Final answer
    x = 296,776.91

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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.