Finding the Fourth Proportional to 369,372,478.56, 509,733,749.91 and 202,109,838.09
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Solution
The fourth proportional to 369,372,478.56, 509,733,749.91 and 202,109,838.09 is: 278,911,428.55
Step by Step Solution
- Step 1: Write the proportion equation
369,372,478.56 : 509,733,749.91 = 202,109,838.09 : x - Step 2: Convert to fraction form
369,372,478.56/509,733,749.91 = 202,109,838.09/x - Step 3: Cross multiply
369,372,478.56x = 509,733,749.91 × 202,109,838.09 - Step 4: Simplify right side
369,372,478.56x = 103,022,205,663,318,656 - Step 5: Solve for x
x = 103,022,205,663,318,656/369,372,478.56 - Step 6: Final answer
x = 278,911,428.55
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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.