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Finding the Fourth Proportional to 376,197.31, 519,135.86 and 215,062.74

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Solution

The fourth proportional to 376,197.31, 519,135.86 and 215,062.74 is: 296,777.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,197.31 : 519,135.86 = 215,062.74 : x
  2. Step 2: Convert to fraction form
    376,197.31/519,135.86 = 215,062.74/x
  3. Step 3: Cross multiply
    376,197.31x = 519,135.86 × 215,062.74
  4. Step 4: Simplify right side
    376,197.31x = 111,646,779,074.75
  5. Step 5: Solve for x
    x = 111,646,779,074.75/376,197.31
  6. Step 6: Final answer
    x = 296,777.19

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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.