Home / 403,143.12-556,336.83-221,866.74

Finding the Fourth Proportional to 403,143.12, 556,336.83 and 221,866.74

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Solution

The fourth proportional to 403,143.12, 556,336.83 and 221,866.74 is: 306,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,143.12 : 556,336.83 = 221,866.74 : x
  2. Step 2: Convert to fraction form
    403,143.12/556,336.83 = 221,866.74/x
  3. Step 3: Cross multiply
    403,143.12x = 556,336.83 × 221,866.74
  4. Step 4: Simplify right side
    403,143.12x = 123,432,638,814.03
  5. Step 5: Solve for x
    x = 123,432,638,814.03/403,143.12
  6. Step 6: Final answer
    x = 306,175.73

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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.