Home / 281,811.42-388,890.72-154,484.28

Finding the Fourth Proportional to 281,811.42, 388,890.72 and 154,484.28

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Solution

The fourth proportional to 281,811.42, 388,890.72 and 154,484.28 is: 213,183.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,811.42 : 388,890.72 = 154,484.28 : x
  2. Step 2: Convert to fraction form
    281,811.42/388,890.72 = 154,484.28/x
  3. Step 3: Cross multiply
    281,811.42x = 388,890.72 × 154,484.28
  4. Step 4: Simplify right side
    281,811.42x = 60,077,502,877.88
  5. Step 5: Solve for x
    x = 60,077,502,877.88/281,811.42
  6. Step 6: Final answer
    x = 213,183.35

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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.