Finding the Fourth Proportional to 438,381.60, 657,572.40 and 251,239.20
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Solution
The fourth proportional to 438,381.60, 657,572.40 and 251,239.20 is: 376,858.80
Step by Step Solution
- Step 1: Write the proportion equation
438,381.60 : 657,572.40 = 251,239.20 : x - Step 2: Convert to fraction form
438,381.60/657,572.40 = 251,239.20/x - Step 3: Cross multiply
438,381.60x = 657,572.40 × 251,239.20 - Step 4: Simplify right side
438,381.60x = 165,207,963,718.08 - Step 5: Solve for x
x = 165,207,963,718.08/438,381.60 - Step 6: Final answer
x = 376,858.80
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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.