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Finding the Fourth Proportional to 376,520.34, 519,470.10 and 215,261.22

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Solution

The fourth proportional to 376,520.34, 519,470.10 and 215,261.22 is: 296,987.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,520.34 : 519,470.10 = 215,261.22 : x
  2. Step 2: Convert to fraction form
    376,520.34/519,470.10 = 215,261.22/x
  3. Step 3: Cross multiply
    376,520.34x = 519,470.10 × 215,261.22
  4. Step 4: Simplify right side
    376,520.34x = 111,821,767,479.52
  5. Step 5: Solve for x
    x = 111,821,767,479.52/376,520.34
  6. Step 6: Final answer
    x = 296,987.32

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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.