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Finding the Fourth Proportional to 281,212.82, 388,078.35 and 200,777.08

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Solution

The fourth proportional to 281,212.82, 388,078.35 and 200,777.08 is: 277,075.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,212.82 : 388,078.35 = 200,777.08 : x
  2. Step 2: Convert to fraction form
    281,212.82/388,078.35 = 200,777.08/x
  3. Step 3: Cross multiply
    281,212.82x = 388,078.35 × 200,777.08
  4. Step 4: Simplify right side
    281,212.82x = 77,917,237,924.22
  5. Step 5: Solve for x
    x = 77,917,237,924.22/281,212.82
  6. Step 6: Final answer
    x = 277,075.70

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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.