Home / 403,263.07-556,498.80-221,971.12

Finding the Fourth Proportional to 403,263.07, 556,498.80 and 221,971.12

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Solution

The fourth proportional to 403,263.07, 556,498.80 and 221,971.12 is: 306,317.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,263.07 : 556,498.80 = 221,971.12 : x
  2. Step 2: Convert to fraction form
    403,263.07/556,498.80 = 221,971.12/x
  3. Step 3: Cross multiply
    403,263.07x = 556,498.80 × 221,971.12
  4. Step 4: Simplify right side
    403,263.07x = 123,526,660,523.41
  5. Step 5: Solve for x
    x = 123,526,660,523.41/403,263.07
  6. Step 6: Final answer
    x = 306,317.81

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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.