Finding the Fourth Proportional to 208,420.98, 287,686.35 and 132,969.42
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Solution
The fourth proportional to 208,420.98, 287,686.35 and 132,969.42 is: 183,539.52
Step by Step Solution
- Step 1: Write the proportion equation
208,420.98 : 287,686.35 = 132,969.42 : x - Step 2: Convert to fraction form
208,420.98/287,686.35 = 132,969.42/x - Step 3: Cross multiply
208,420.98x = 287,686.35 × 132,969.42 - Step 4: Simplify right side
208,420.98x = 38,253,487,101.42 - Step 5: Solve for x
x = 38,253,487,101.42/208,420.98 - Step 6: Final answer
x = 183,539.52
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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.