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Finding the Fourth Proportional to 376,403.28, 519,404.40 and 215,232.30

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Solution

The fourth proportional to 376,403.28, 519,404.40 and 215,232.30 is: 297,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,403.28 : 519,404.40 = 215,232.30 : x
  2. Step 2: Convert to fraction form
    376,403.28/519,404.40 = 215,232.30/x
  3. Step 3: Cross multiply
    376,403.28x = 519,404.40 × 215,232.30
  4. Step 4: Simplify right side
    376,403.28x = 111,792,603,642.12
  5. Step 5: Solve for x
    x = 111,792,603,642.12/376,403.28
  6. Step 6: Final answer
    x = 297,002.20

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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.