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Finding the Fourth Proportional to 449,059.92, 619,702.53 and 306,069.66

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Solution

The fourth proportional to 449,059.92, 619,702.53 and 306,069.66 is: 422,376.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,059.92 : 619,702.53 = 306,069.66 : x
  2. Step 2: Convert to fraction form
    449,059.92/619,702.53 = 306,069.66/x
  3. Step 3: Cross multiply
    449,059.92x = 619,702.53 × 306,069.66
  4. Step 4: Simplify right side
    449,059.92x = 189,672,142,658.24
  5. Step 5: Solve for x
    x = 189,672,142,658.24/449,059.92
  6. Step 6: Final answer
    x = 422,376.02

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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.