Finding the Fourth Proportional to 201,749,311.80, 278,405,448.14 and 112,436,503.53
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Solution
The fourth proportional to 201,749,311.80, 278,405,448.14 and 112,436,503.53 is: 155,157,580.82
Step by Step Solution
- Step 1: Write the proportion equation
201,749,311.80 : 278,405,448.14 = 112,436,503.53 : x - Step 2: Convert to fraction form
201,749,311.80/278,405,448.14 = 112,436,503.53/x - Step 3: Cross multiply
201,749,311.80x = 278,405,448.14 × 112,436,503.53 - Step 4: Simplify right side
201,749,311.80x = 31,302,935,151,801,412 - Step 5: Solve for x
x = 31,302,935,151,801,412/201,749,311.80 - Step 6: Final answer
x = 155,157,580.82
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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.