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Finding the Fourth Proportional to 344,105.60, 515,121.60 and 306,780.80

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Solution

The fourth proportional to 344,105.60, 515,121.60 and 306,780.80 is: 459,246.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,105.60 : 515,121.60 = 306,780.80 : x
  2. Step 2: Convert to fraction form
    344,105.60/515,121.60 = 306,780.80/x
  3. Step 3: Cross multiply
    344,105.60x = 515,121.60 × 306,780.80
  4. Step 4: Simplify right side
    344,105.60x = 158,029,416,545.28
  5. Step 5: Solve for x
    x = 158,029,416,545.28/344,105.60
  6. Step 6: Final answer
    x = 459,246.86

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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.