Home / 403,009.05-556,152.46-221,717.10

Finding the Fourth Proportional to 403,009.05, 556,152.46 and 221,717.10

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Solution

The fourth proportional to 403,009.05, 556,152.46 and 221,717.10 is: 305,969.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,009.05 : 556,152.46 = 221,717.10 : x
  2. Step 2: Convert to fraction form
    403,009.05/556,152.46 = 221,717.10/x
  3. Step 3: Cross multiply
    403,009.05x = 556,152.46 × 221,717.10
  4. Step 4: Simplify right side
    403,009.05x = 123,308,510,589.07
  5. Step 5: Solve for x
    x = 123,308,510,589.07/403,009.05
  6. Step 6: Final answer
    x = 305,969.58

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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.