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Finding the Fourth Proportional to 309,116.76, 426,586.54 and 173,149.56

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Solution

The fourth proportional to 309,116.76, 426,586.54 and 173,149.56 is: 238,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,116.76 : 426,586.54 = 173,149.56 : x
  2. Step 2: Convert to fraction form
    309,116.76/426,586.54 = 173,149.56/x
  3. Step 3: Cross multiply
    309,116.76x = 426,586.54 × 173,149.56
  4. Step 4: Simplify right side
    309,116.76x = 73,863,271,702.92
  5. Step 5: Solve for x
    x = 73,863,271,702.92/309,116.76
  6. Step 6: Final answer
    x = 238,949.42

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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.