Finding the Fourth Proportional to 245,611,365.76, 338,973,409.68 and 139,790,511.52
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Solution
The fourth proportional to 245,611,365.76, 338,973,409.68 and 139,790,511.52 is: 192,927,823.94
Step by Step Solution
- Step 1: Write the proportion equation
245,611,365.76 : 338,973,409.68 = 139,790,511.52 : x - Step 2: Convert to fraction form
245,611,365.76/338,973,409.68 = 139,790,511.52/x - Step 3: Cross multiply
245,611,365.76x = 338,973,409.68 × 139,790,511.52 - Step 4: Simplify right side
245,611,365.76x = 47,385,266,330,845,728 - Step 5: Solve for x
x = 47,385,266,330,845,728/245,611,365.76 - Step 6: Final answer
x = 192,927,823.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.