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Finding the Fourth Proportional to 281,372.76, 388,294.56 and 154,048.32

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Solution

The fourth proportional to 281,372.76, 388,294.56 and 154,048.32 is: 212,586.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,372.76 : 388,294.56 = 154,048.32 : x
  2. Step 2: Convert to fraction form
    281,372.76/388,294.56 = 154,048.32/x
  3. Step 3: Cross multiply
    281,372.76x = 388,294.56 × 154,048.32
  4. Step 4: Simplify right side
    281,372.76x = 59,816,124,633.14
  5. Step 5: Solve for x
    x = 59,816,124,633.14/281,372.76
  6. Step 6: Final answer
    x = 212,586.76

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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.