Finding the Fourth Proportional to 344,135,846.40, 515,805,638.40 and 139,562,764.80
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Solution
The fourth proportional to 344,135,846.40, 515,805,638.40 and 139,562,764.80 is: 209,182,686.86
Step by Step Solution
- Step 1: Write the proportion equation
344,135,846.40 : 515,805,638.40 = 139,562,764.80 : x - Step 2: Convert to fraction form
344,135,846.40/515,805,638.40 = 139,562,764.80/x - Step 3: Cross multiply
344,135,846.40x = 515,805,638.40 × 139,562,764.80 - Step 4: Simplify right side
344,135,846.40x = 71,987,260,994,533,048 - Step 5: Solve for x
x = 71,987,260,994,533,048/344,135,846.40 - Step 6: Final answer
x = 209,182,686.86
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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.