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Finding the Fourth Proportional to 281,314.64, 388,218.48 and 154,002.08

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Solution

The fourth proportional to 281,314.64, 388,218.48 and 154,002.08 is: 212,525.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,314.64 : 388,218.48 = 154,002.08 : x
  2. Step 2: Convert to fraction form
    281,314.64/388,218.48 = 154,002.08/x
  3. Step 3: Cross multiply
    281,314.64x = 388,218.48 × 154,002.08
  4. Step 4: Simplify right side
    281,314.64x = 59,786,453,414.44
  5. Step 5: Solve for x
    x = 59,786,453,414.44/281,314.64
  6. Step 6: Final answer
    x = 212,525.21

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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.