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Finding the Fourth Proportional to 355,148.08, 490,085.60 and 194,000.80

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Solution

The fourth proportional to 355,148.08, 490,085.60 and 194,000.80 is: 267,710.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,148.08 : 490,085.60 = 194,000.80 : x
  2. Step 2: Convert to fraction form
    355,148.08/490,085.60 = 194,000.80/x
  3. Step 3: Cross multiply
    355,148.08x = 490,085.60 × 194,000.80
  4. Step 4: Simplify right side
    355,148.08x = 95,076,998,468.48
  5. Step 5: Solve for x
    x = 95,076,998,468.48/355,148.08
  6. Step 6: Final answer
    x = 267,710.86

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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.