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Finding the Fourth Proportional to 329,409.70, 454,243.53 and 281,820.58

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Solution

The fourth proportional to 329,409.70, 454,243.53 and 281,820.58 is: 388,619.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,409.70 : 454,243.53 = 281,820.58 : x
  2. Step 2: Convert to fraction form
    329,409.70/454,243.53 = 281,820.58/x
  3. Step 3: Cross multiply
    329,409.70x = 454,243.53 × 281,820.58
  4. Step 4: Simplify right side
    329,409.70x = 128,015,175,085.85
  5. Step 5: Solve for x
    x = 128,015,175,085.85/329,409.70
  6. Step 6: Final answer
    x = 388,619.93

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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.