Home / 309,531.26-427,229.02-188,739.06

Finding the Fourth Proportional to 309,531.26, 427,229.02 and 188,739.06

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Solution

The fourth proportional to 309,531.26, 427,229.02 and 188,739.06 is: 260,506.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,531.26 : 427,229.02 = 188,739.06 : x
  2. Step 2: Convert to fraction form
    309,531.26/427,229.02 = 188,739.06/x
  3. Step 3: Cross multiply
    309,531.26x = 427,229.02 × 188,739.06
  4. Step 4: Simplify right side
    309,531.26x = 80,634,803,639.52
  5. Step 5: Solve for x
    x = 80,634,803,639.52/309,531.26
  6. Step 6: Final answer
    x = 260,506.17

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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.