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Finding the Fourth Proportional to 199,568.08, 299,408.28 and 87,258.16

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Solution

The fourth proportional to 199,568.08, 299,408.28 and 87,258.16 is: 130,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,568.08 : 299,408.28 = 87,258.16 : x
  2. Step 2: Convert to fraction form
    199,568.08/299,408.28 = 87,258.16/x
  3. Step 3: Cross multiply
    199,568.08x = 299,408.28 × 87,258.16
  4. Step 4: Simplify right side
    199,568.08x = 26,125,815,601.56
  5. Step 5: Solve for x
    x = 26,125,815,601.56/199,568.08
  6. Step 6: Final answer
    x = 130,911.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.