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Finding the Fourth Proportional to 358,634.16, 494,916.57 and 215,396.64

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Solution

The fourth proportional to 358,634.16, 494,916.57 and 215,396.64 is: 297,248.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,634.16 : 494,916.57 = 215,396.64 : x
  2. Step 2: Convert to fraction form
    358,634.16/494,916.57 = 215,396.64/x
  3. Step 3: Cross multiply
    358,634.16x = 494,916.57 × 215,396.64
  4. Step 4: Simplify right side
    358,634.16x = 106,603,366,258.33
  5. Step 5: Solve for x
    x = 106,603,366,258.33/358,634.16
  6. Step 6: Final answer
    x = 297,248.22

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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.