Finding the Fourth Proportional to 389,187.18, 537,077.42 and 219,420.09
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Solution
The fourth proportional to 389,187.18, 537,077.42 and 219,420.09 is: 302,799.22
Step by Step Solution
- Step 1: Write the proportion equation
389,187.18 : 537,077.42 = 219,420.09 : x - Step 2: Convert to fraction form
389,187.18/537,077.42 = 219,420.09/x - Step 3: Cross multiply
389,187.18x = 537,077.42 × 219,420.09 - Step 4: Simplify right side
389,187.18x = 117,845,575,559.09 - Step 5: Solve for x
x = 117,845,575,559.09/389,187.18 - Step 6: Final answer
x = 302,799.22
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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.