Finding the Fourth Proportional to 221,299,271.20, 331,948,906.80 and 135,205,829.20
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Solution
The fourth proportional to 221,299,271.20, 331,948,906.80 and 135,205,829.20 is: 202,808,743.80
Step by Step Solution
- Step 1: Write the proportion equation
221,299,271.20 : 331,948,906.80 = 135,205,829.20 : x - Step 2: Convert to fraction form
221,299,271.20/331,948,906.80 = 135,205,829.20/x - Step 3: Cross multiply
221,299,271.20x = 331,948,906.80 × 135,205,829.20 - Step 4: Simplify right side
221,299,271.20x = 44,881,427,195,927,520 - Step 5: Solve for x
x = 44,881,427,195,927,520/221,299,271.20 - Step 6: Final answer
x = 202,808,743.80
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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.