Finding the Fourth Proportional to 257,041.42, 354,083.36 and 218,678.09
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Solution
The fourth proportional to 257,041.42, 354,083.36 and 218,678.09 is: 301,236.55
Step by Step Solution
- Step 1: Write the proportion equation
257,041.42 : 354,083.36 = 218,678.09 : x - Step 2: Convert to fraction form
257,041.42/354,083.36 = 218,678.09/x - Step 3: Cross multiply
257,041.42x = 354,083.36 × 218,678.09 - Step 4: Simplify right side
257,041.42x = 77,430,270,001.78 - Step 5: Solve for x
x = 77,430,270,001.78/257,041.42 - Step 6: Final answer
x = 301,236.55
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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.