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Finding the Fourth Proportional to 328,073.80, 492,110.70 and 268,976.20

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Solution

The fourth proportional to 328,073.80, 492,110.70 and 268,976.20 is: 403,464.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,073.80 : 492,110.70 = 268,976.20 : x
  2. Step 2: Convert to fraction form
    328,073.80/492,110.70 = 268,976.20/x
  3. Step 3: Cross multiply
    328,073.80x = 492,110.70 × 268,976.20
  4. Step 4: Simplify right side
    328,073.80x = 132,366,066,065.34
  5. Step 5: Solve for x
    x = 132,366,066,065.34/328,073.80
  6. Step 6: Final answer
    x = 403,464.30

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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.