Finding the Fourth Proportional to 292,691.40, 438,991.26 and 92,985.54
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Solution
The fourth proportional to 292,691.40, 438,991.26 and 92,985.54 is: 139,463.75
Step by Step Solution
- Step 1: Write the proportion equation
292,691.40 : 438,991.26 = 92,985.54 : x - Step 2: Convert to fraction form
292,691.40/438,991.26 = 92,985.54/x - Step 3: Cross multiply
292,691.40x = 438,991.26 × 92,985.54 - Step 4: Simplify right side
292,691.40x = 40,819,839,366.38 - Step 5: Solve for x
x = 40,819,839,366.38/292,691.40 - Step 6: Final answer
x = 139,463.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.