Finding the Fourth Proportional to 208,534,496.70, 312,801,745.05 and 198,968,558.70
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Solution
The fourth proportional to 208,534,496.70, 312,801,745.05 and 198,968,558.70 is: 298,452,838.05
Step by Step Solution
- Step 1: Write the proportion equation
208,534,496.70 : 312,801,745.05 = 198,968,558.70 : x - Step 2: Convert to fraction form
208,534,496.70/312,801,745.05 = 198,968,558.70/x - Step 3: Cross multiply
208,534,496.70x = 312,801,745.05 × 198,968,558.70 - Step 4: Simplify right side
208,534,496.70x = 62,237,712,371,443,360 - Step 5: Solve for x
x = 62,237,712,371,443,360/208,534,496.70 - Step 6: Final answer
x = 298,452,838.05
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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.