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Finding the Fourth Proportional to 376,388.76, 519,411.42 and 215,270.04

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Solution

The fourth proportional to 376,388.76, 519,411.42 and 215,270.04 is: 297,069.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,388.76 : 519,411.42 = 215,270.04 : x
  2. Step 2: Convert to fraction form
    376,388.76/519,411.42 = 215,270.04/x
  3. Step 3: Cross multiply
    376,388.76x = 519,411.42 × 215,270.04
  4. Step 4: Simplify right side
    376,388.76x = 111,813,717,159.86
  5. Step 5: Solve for x
    x = 111,813,717,159.86/376,388.76
  6. Step 6: Final answer
    x = 297,069.76

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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.