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Finding the Fourth Proportional to 329,409.20, 454,242.84 and 281,820.08

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Solution

The fourth proportional to 329,409.20, 454,242.84 and 281,820.08 is: 388,619.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,409.20 : 454,242.84 = 281,820.08 : x
  2. Step 2: Convert to fraction form
    329,409.20/454,242.84 = 281,820.08/x
  3. Step 3: Cross multiply
    329,409.20x = 454,242.84 × 281,820.08
  4. Step 4: Simplify right side
    329,409.20x = 128,014,753,508.23
  5. Step 5: Solve for x
    x = 128,014,753,508.23/329,409.20
  6. Step 6: Final answer
    x = 388,619.24

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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.