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Finding the Fourth Proportional to 328,995.90, 454,419.16 and 238,208.12

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Solution

The fourth proportional to 328,995.90, 454,419.16 and 238,208.12 is: 329,020.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,995.90 : 454,419.16 = 238,208.12 : x
  2. Step 2: Convert to fraction form
    328,995.90/454,419.16 = 238,208.12/x
  3. Step 3: Cross multiply
    328,995.90x = 454,419.16 × 238,208.12
  4. Step 4: Simplify right side
    328,995.90x = 108,246,333,795.58
  5. Step 5: Solve for x
    x = 108,246,333,795.58/328,995.90
  6. Step 6: Final answer
    x = 329,020.31

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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.