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Finding the Fourth Proportional to 381,812.63, 526,838.19 and 220,682.72

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Solution

The fourth proportional to 381,812.63, 526,838.19 and 220,682.72 is: 304,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,812.63 : 526,838.19 = 220,682.72 : x
  2. Step 2: Convert to fraction form
    381,812.63/526,838.19 = 220,682.72/x
  3. Step 3: Cross multiply
    381,812.63x = 526,838.19 × 220,682.72
  4. Step 4: Simplify right side
    381,812.63x = 116,264,084,769.08
  5. Step 5: Solve for x
    x = 116,264,084,769.08/381,812.63
  6. Step 6: Final answer
    x = 304,505.60

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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.