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Finding the Fourth Proportional to 328,996.90, 454,420.54 and 238,209.12

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Solution

The fourth proportional to 328,996.90, 454,420.54 and 238,209.12 is: 329,021.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,996.90 : 454,420.54 = 238,209.12 : x
  2. Step 2: Convert to fraction form
    328,996.90/454,420.54 = 238,209.12/x
  3. Step 3: Cross multiply
    328,996.90x = 454,420.54 × 238,209.12
  4. Step 4: Simplify right side
    328,996.90x = 108,247,116,943.33
  5. Step 5: Solve for x
    x = 108,247,116,943.33/328,996.90
  6. Step 6: Final answer
    x = 329,021.69

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1.5x scale

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.