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Finding the Fourth Proportional to 381,762.72, 526,801.83 and 220,628.21

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Solution

The fourth proportional to 381,762.72, 526,801.83 and 220,628.21 is: 304,449.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,762.72 : 526,801.83 = 220,628.21 : x
  2. Step 2: Convert to fraction form
    381,762.72/526,801.83 = 220,628.21/x
  3. Step 3: Cross multiply
    381,762.72x = 526,801.83 × 220,628.21
  4. Step 4: Simplify right side
    381,762.72x = 116,227,341,316.26
  5. Step 5: Solve for x
    x = 116,227,341,316.26/381,762.72
  6. Step 6: Final answer
    x = 304,449.16

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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.