Finding the Fourth Proportional to 487,192.42, 671,991.96 and 317,656.18
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Solution
The fourth proportional to 487,192.42, 671,991.96 and 317,656.18 is: 438,148.03
Step by Step Solution
- Step 1: Write the proportion equation
487,192.42 : 671,991.96 = 317,656.18 : x - Step 2: Convert to fraction form
487,192.42/671,991.96 = 317,656.18/x - Step 3: Cross multiply
487,192.42x = 671,991.96 × 317,656.18 - Step 4: Simplify right side
487,192.42x = 213,462,399,004.31 - Step 5: Solve for x
x = 213,462,399,004.31/487,192.42 - Step 6: Final answer
x = 438,148.03
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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.