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Finding the Fourth Proportional to 358,915.56, 495,297 and 197,785.56

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Solution

The fourth proportional to 358,915.56, 495,297 and 197,785.56 is: 272,940.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,915.56 : 495,297 = 197,785.56 : x
  2. Step 2: Convert to fraction form
    358,915.56/495,297 = 197,785.56/x
  3. Step 3: Cross multiply
    358,915.56x = 495,297 × 197,785.56
  4. Step 4: Simplify right side
    358,915.56x = 97,962,594,511.32
  5. Step 5: Solve for x
    x = 97,962,594,511.32/358,915.56
  6. Step 6: Final answer
    x = 272,940.51

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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.