Home / 403,014.78-556,160.37-221,722.81

Finding the Fourth Proportional to 403,014.78, 556,160.37 and 221,722.81

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Solution

The fourth proportional to 403,014.78, 556,160.37 and 221,722.81 is: 305,977.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,014.78 : 556,160.37 = 221,722.81 : x
  2. Step 2: Convert to fraction form
    403,014.78/556,160.37 = 221,722.81/x
  3. Step 3: Cross multiply
    403,014.78x = 556,160.37 × 221,722.81
  4. Step 4: Simplify right side
    403,014.78x = 123,313,440,047.04
  5. Step 5: Solve for x
    x = 123,313,440,047.04/403,014.78
  6. Step 6: Final answer
    x = 305,977.46

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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.