Home / 403,015.13-556,160.85-221,723.16

Finding the Fourth Proportional to 403,015.13, 556,160.85 and 221,723.16

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Solution

The fourth proportional to 403,015.13, 556,160.85 and 221,723.16 is: 305,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,015.13 : 556,160.85 = 221,723.16 : x
  2. Step 2: Convert to fraction form
    403,015.13/556,160.85 = 221,723.16/x
  3. Step 3: Cross multiply
    403,015.13x = 556,160.85 × 221,723.16
  4. Step 4: Simplify right side
    403,015.13x = 123,313,741,130.29
  5. Step 5: Solve for x
    x = 123,313,741,130.29/403,015.13
  6. Step 6: Final answer
    x = 305,977.95

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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.