Home / 281,866.32-389,099.56-197,315.28

Finding the Fourth Proportional to 281,866.32, 389,099.56 and 197,315.28

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Solution

The fourth proportional to 281,866.32, 389,099.56 and 197,315.28 is: 272,381.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,866.32 : 389,099.56 = 197,315.28 : x
  2. Step 2: Convert to fraction form
    281,866.32/389,099.56 = 197,315.28/x
  3. Step 3: Cross multiply
    281,866.32x = 389,099.56 × 197,315.28
  4. Step 4: Simplify right side
    281,866.32x = 76,775,288,629.28
  5. Step 5: Solve for x
    x = 76,775,288,629.28/281,866.32
  6. Step 6: Final answer
    x = 272,381.92

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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.