Home / 281,221.07-388,083.56-153,896.36

Finding the Fourth Proportional to 281,221.07, 388,083.56 and 153,896.36

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Solution

The fourth proportional to 281,221.07, 388,083.56 and 153,896.36 is: 212,376.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,221.07 : 388,083.56 = 153,896.36 : x
  2. Step 2: Convert to fraction form
    281,221.07/388,083.56 = 153,896.36/x
  3. Step 3: Cross multiply
    281,221.07x = 388,083.56 × 153,896.36
  4. Step 4: Simplify right side
    281,221.07x = 59,724,644,549.94
  5. Step 5: Solve for x
    x = 59,724,644,549.94/281,221.07
  6. Step 6: Final answer
    x = 212,376.14

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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.