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Finding the Fourth Proportional to 376,641.28, 519,855.44 and 215,589.68

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Solution

The fourth proportional to 376,641.28, 519,855.44 and 215,589.68 is: 297,565.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,641.28 : 519,855.44 = 215,589.68 : x
  2. Step 2: Convert to fraction form
    376,641.28/519,855.44 = 215,589.68/x
  3. Step 3: Cross multiply
    376,641.28x = 519,855.44 × 215,589.68
  4. Step 4: Simplify right side
    376,641.28x = 112,075,467,955.86
  5. Step 5: Solve for x
    x = 112,075,467,955.86/376,641.28
  6. Step 6: Final answer
    x = 297,565.55

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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.