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Finding the Fourth Proportional to 328,776.55, 493,164.83 and 269,678.95

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Solution

The fourth proportional to 328,776.55, 493,164.83 and 269,678.95 is: 404,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,776.55 : 493,164.83 = 269,678.95 : x
  2. Step 2: Convert to fraction form
    328,776.55/493,164.83 = 269,678.95/x
  3. Step 3: Cross multiply
    328,776.55x = 493,164.83 × 269,678.95
  4. Step 4: Simplify right side
    328,776.55x = 132,996,172,182.93
  5. Step 5: Solve for x
    x = 132,996,172,182.93/328,776.55
  6. Step 6: Final answer
    x = 404,518.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.