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Finding the Fourth Proportional to 329,410.70, 454,244.91 and 281,821.58

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Solution

The fourth proportional to 329,410.70, 454,244.91 and 281,821.58 is: 388,621.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,410.70 : 454,244.91 = 281,821.58 : x
  2. Step 2: Convert to fraction form
    329,410.70/454,244.91 = 281,821.58/x
  3. Step 3: Cross multiply
    329,410.70x = 454,244.91 × 281,821.58
  4. Step 4: Simplify right side
    329,410.70x = 128,016,018,243.16
  5. Step 5: Solve for x
    x = 128,016,018,243.16/329,410.70
  6. Step 6: Final answer
    x = 388,621.31

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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.