Home / 403,009.68-556,153.38-221,717.73

Finding the Fourth Proportional to 403,009.68, 556,153.38 and 221,717.73

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Solution

The fourth proportional to 403,009.68, 556,153.38 and 221,717.73 is: 305,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,009.68 : 556,153.38 = 221,717.73 : x
  2. Step 2: Convert to fraction form
    403,009.68/556,153.38 = 221,717.73/x
  3. Step 3: Cross multiply
    403,009.68x = 556,153.38 × 221,717.73
  4. Step 4: Simplify right side
    403,009.68x = 123,309,064,945.43
  5. Step 5: Solve for x
    x = 123,309,064,945.43/403,009.68
  6. Step 6: Final answer
    x = 305,970.48

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1.5x scale

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.