Finding the Fourth Proportional to 217,620,258.60, 326,430,387.90 and 205,149,109.80
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Solution
The fourth proportional to 217,620,258.60, 326,430,387.90 and 205,149,109.80 is: 307,723,664.70
Step by Step Solution
- Step 1: Write the proportion equation
217,620,258.60 : 326,430,387.90 = 205,149,109.80 : x - Step 2: Convert to fraction form
217,620,258.60/326,430,387.90 = 205,149,109.80/x - Step 3: Cross multiply
217,620,258.60x = 326,430,387.90 × 205,149,109.80 - Step 4: Simplify right side
217,620,258.60x = 66,966,903,489,353,688 - Step 5: Solve for x
x = 66,966,903,489,353,688/217,620,258.60 - Step 6: Final answer
x = 307,723,664.70
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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.