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Finding the Fourth Proportional to 373,642.97, 515,492.57 and 287,628.26

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Solution

The fourth proportional to 373,642.97, 515,492.57 and 287,628.26 is: 396,823.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,642.97 : 515,492.57 = 287,628.26 : x
  2. Step 2: Convert to fraction form
    373,642.97/515,492.57 = 287,628.26/x
  3. Step 3: Cross multiply
    373,642.97x = 515,492.57 × 287,628.26
  4. Step 4: Simplify right side
    373,642.97x = 148,270,229,093.64
  5. Step 5: Solve for x
    x = 148,270,229,093.64/373,642.97
  6. Step 6: Final answer
    x = 396,823.29

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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.