Home / 306,280.44-422,638.56-283,710.60

Finding the Fourth Proportional to 306,280.44, 422,638.56 and 283,710.60

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Solution

The fourth proportional to 306,280.44, 422,638.56 and 283,710.60 is: 391,494.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,280.44 : 422,638.56 = 283,710.60 : x
  2. Step 2: Convert to fraction form
    306,280.44/422,638.56 = 283,710.60/x
  3. Step 3: Cross multiply
    306,280.44x = 422,638.56 × 283,710.60
  4. Step 4: Simplify right side
    306,280.44x = 119,907,039,440.74
  5. Step 5: Solve for x
    x = 119,907,039,440.74/306,280.44
  6. Step 6: Final answer
    x = 391,494.28

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1.5x scale

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.