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Finding the Fourth Proportional to 217,282.32, 299,858.28 and 121,788.32

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Solution

The fourth proportional to 217,282.32, 299,858.28 and 121,788.32 is: 168,072.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,282.32 : 299,858.28 = 121,788.32 : x
  2. Step 2: Convert to fraction form
    217,282.32/299,858.28 = 121,788.32/x
  3. Step 3: Cross multiply
    217,282.32x = 299,858.28 × 121,788.32
  4. Step 4: Simplify right side
    217,282.32x = 36,519,236,159.29
  5. Step 5: Solve for x
    x = 36,519,236,159.29/217,282.32
  6. Step 6: Final answer
    x = 168,072.75

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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.