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Finding the Fourth Proportional to 376,184.80, 519,134.92 and 215,043.28

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Solution

The fourth proportional to 376,184.80, 519,134.92 and 215,043.28 is: 296,759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,184.80 : 519,134.92 = 215,043.28 : x
  2. Step 2: Convert to fraction form
    376,184.80/519,134.92 = 215,043.28/x
  3. Step 3: Cross multiply
    376,184.80x = 519,134.92 × 215,043.28
  4. Step 4: Simplify right side
    376,184.80x = 111,636,475,959.34
  5. Step 5: Solve for x
    x = 111,636,475,959.34/376,184.80
  6. Step 6: Final answer
    x = 296,759.67

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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.