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Finding the Fourth Proportional to 376,250.95, 519,078.51 and 215,019.50

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Solution

The fourth proportional to 376,250.95, 519,078.51 and 215,019.50 is: 296,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,250.95 : 519,078.51 = 215,019.50 : x
  2. Step 2: Convert to fraction form
    376,250.95/519,078.51 = 215,019.50/x
  3. Step 3: Cross multiply
    376,250.95x = 519,078.51 × 215,019.50
  4. Step 4: Simplify right side
    376,250.95x = 111,612,000,605.85
  5. Step 5: Solve for x
    x = 111,612,000,605.85/376,250.95
  6. Step 6: Final answer
    x = 296,642.45

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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.