Home / 281,238.42-388,109.64-153,922.20

Finding the Fourth Proportional to 281,238.42, 388,109.64 and 153,922.20

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Solution

The fourth proportional to 281,238.42, 388,109.64 and 153,922.20 is: 212,412.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,238.42 : 388,109.64 = 153,922.20 : x
  2. Step 2: Convert to fraction form
    281,238.42/388,109.64 = 153,922.20/x
  3. Step 3: Cross multiply
    281,238.42x = 388,109.64 × 153,922.20
  4. Step 4: Simplify right side
    281,238.42x = 59,738,689,630.01
  5. Step 5: Solve for x
    x = 59,738,689,630.01/281,238.42
  6. Step 6: Final answer
    x = 212,412.98

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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.