Home / 403,158.22-556,358.44-221,870.10

Finding the Fourth Proportional to 403,158.22, 556,358.44 and 221,870.10

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Solution

The fourth proportional to 403,158.22, 556,358.44 and 221,870.10 is: 306,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,158.22 : 556,358.44 = 221,870.10 : x
  2. Step 2: Convert to fraction form
    403,158.22/556,358.44 = 221,870.10/x
  3. Step 3: Cross multiply
    403,158.22x = 556,358.44 × 221,870.10
  4. Step 4: Simplify right side
    403,158.22x = 123,439,302,718.64
  5. Step 5: Solve for x
    x = 123,439,302,718.64/403,158.22
  6. Step 6: Final answer
    x = 306,180.79

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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.