Finding the Fourth Proportional to 312,739,114.23, 431,578,793.36 and 171,612,695.92
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Solution
The fourth proportional to 312,739,114.23, 431,578,793.36 and 171,612,695.92 is: 236,824,870.51
Step by Step Solution
- Step 1: Write the proportion equation
312,739,114.23 : 431,578,793.36 = 171,612,695.92 : x - Step 2: Convert to fraction form
312,739,114.23/431,578,793.36 = 171,612,695.92/x - Step 3: Cross multiply
312,739,114.23x = 431,578,793.36 × 171,612,695.92 - Step 4: Simplify right side
312,739,114.23x = 74,064,400,230,323,760 - Step 5: Solve for x
x = 74,064,400,230,323,760/312,739,114.23 - Step 6: Final answer
x = 236,824,870.51
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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.