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Finding the Fourth Proportional to 376,291.44, 519,247.80 and 215,141.40

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Solution

The fourth proportional to 376,291.44, 519,247.80 and 215,141.40 is: 296,875.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,291.44 : 519,247.80 = 215,141.40 : x
  2. Step 2: Convert to fraction form
    376,291.44/519,247.80 = 215,141.40/x
  3. Step 3: Cross multiply
    376,291.44x = 519,247.80 × 215,141.40
  4. Step 4: Simplify right side
    376,291.44x = 111,711,698,638.92
  5. Step 5: Solve for x
    x = 111,711,698,638.92/376,291.44
  6. Step 6: Final answer
    x = 296,875.47

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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.