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Finding the Fourth Proportional to 376,423.47, 519,505.70 and 215,293.59

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Solution

The fourth proportional to 376,423.47, 519,505.70 and 215,293.59 is: 297,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,423.47 : 519,505.70 = 215,293.59 : x
  2. Step 2: Convert to fraction form
    376,423.47/519,505.70 = 215,293.59/x
  3. Step 3: Cross multiply
    376,423.47x = 519,505.70 × 215,293.59
  4. Step 4: Simplify right side
    376,423.47x = 111,846,246,102.00
  5. Step 5: Solve for x
    x = 111,846,246,102.00/376,423.47
  6. Step 6: Final answer
    x = 297,128.78

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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.