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Finding the Fourth Proportional to 281,324.64, 388,232.28 and 154,012.08

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Solution

The fourth proportional to 281,324.64, 388,232.28 and 154,012.08 is: 212,539.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,324.64 : 388,232.28 = 154,012.08 : x
  2. Step 2: Convert to fraction form
    281,324.64/388,232.28 = 154,012.08/x
  3. Step 3: Cross multiply
    281,324.64x = 388,232.28 × 154,012.08
  4. Step 4: Simplify right side
    281,324.64x = 59,792,460,965.94
  5. Step 5: Solve for x
    x = 59,792,460,965.94/281,324.64
  6. Step 6: Final answer
    x = 212,539.01

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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.