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Finding the Fourth Proportional to 213,995.52, 295,215.84 and 138,568.32

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Solution

The fourth proportional to 213,995.52, 295,215.84 and 138,568.32 is: 191,160.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,995.52 : 295,215.84 = 138,568.32 : x
  2. Step 2: Convert to fraction form
    213,995.52/295,215.84 = 138,568.32/x
  3. Step 3: Cross multiply
    213,995.52x = 295,215.84 × 138,568.32
  4. Step 4: Simplify right side
    213,995.52x = 40,907,562,986.19
  5. Step 5: Solve for x
    x = 40,907,562,986.19/213,995.52
  6. Step 6: Final answer
    x = 191,160.84

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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.