Home / 281,238.03-388,109.14-153,921.83

Finding the Fourth Proportional to 281,238.03, 388,109.14 and 153,921.83

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Solution

The fourth proportional to 281,238.03, 388,109.14 and 153,921.83 is: 212,412.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,238.03 : 388,109.14 = 153,921.83 : x
  2. Step 2: Convert to fraction form
    281,238.03/388,109.14 = 153,921.83/x
  3. Step 3: Cross multiply
    281,238.03x = 388,109.14 × 153,921.83
  4. Step 4: Simplify right side
    281,238.03x = 59,738,466,743.18
  5. Step 5: Solve for x
    x = 59,738,466,743.18/281,238.03
  6. Step 6: Final answer
    x = 212,412.48

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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.