Home / 403,238.56-556,464.78-221,946.58

Finding the Fourth Proportional to 403,238.56, 556,464.78 and 221,946.58

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Solution

The fourth proportional to 403,238.56, 556,464.78 and 221,946.58 is: 306,283.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,238.56 : 556,464.78 = 221,946.58 : x
  2. Step 2: Convert to fraction form
    403,238.56/556,464.78 = 221,946.58/x
  3. Step 3: Cross multiply
    403,238.56x = 556,464.78 × 221,946.58
  4. Step 4: Simplify right side
    403,238.56x = 123,505,454,811.45
  5. Step 5: Solve for x
    x = 123,505,454,811.45/403,238.56
  6. Step 6: Final answer
    x = 306,283.84

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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.