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Finding the Fourth Proportional to 266,422.53, 399,289.30 and 199,336.30

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Solution

The fourth proportional to 266,422.53, 399,289.30 and 199,336.30 is: 298,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,422.53 : 399,289.30 = 199,336.30 : x
  2. Step 2: Convert to fraction form
    266,422.53/399,289.30 = 199,336.30/x
  3. Step 3: Cross multiply
    266,422.53x = 399,289.30 × 199,336.30
  4. Step 4: Simplify right side
    266,422.53x = 79,592,851,691.59
  5. Step 5: Solve for x
    x = 79,592,851,691.59/266,422.53
  6. Step 6: Final answer
    x = 298,746.70

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1.5x scale

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.