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Finding the Fourth Proportional to 355,246.52, 490,247.28 and 194,111.60

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Solution

The fourth proportional to 355,246.52, 490,247.28 and 194,111.60 is: 267,877.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,246.52 : 490,247.28 = 194,111.60 : x
  2. Step 2: Convert to fraction form
    355,246.52/490,247.28 = 194,111.60/x
  3. Step 3: Cross multiply
    355,246.52x = 490,247.28 × 194,111.60
  4. Step 4: Simplify right side
    355,246.52x = 95,162,683,916.45
  5. Step 5: Solve for x
    x = 95,162,683,916.45/355,246.52
  6. Step 6: Final answer
    x = 267,877.88

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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.