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Finding the Fourth Proportional to 281,760.08, 388,828.10 and 154,435.28

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Solution

The fourth proportional to 281,760.08, 388,828.10 and 154,435.28 is: 213,120.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,760.08 : 388,828.10 = 154,435.28 : x
  2. Step 2: Convert to fraction form
    281,760.08/388,828.10 = 154,435.28/x
  3. Step 3: Cross multiply
    281,760.08x = 388,828.10 × 154,435.28
  4. Step 4: Simplify right side
    281,760.08x = 60,048,776,495.37
  5. Step 5: Solve for x
    x = 60,048,776,495.37/281,760.08
  6. Step 6: Final answer
    x = 213,120.24

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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.