Finding the Fourth Proportional to 287,779.56, 397,121.22 and 160,430.52
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Solution
The fourth proportional to 287,779.56, 397,121.22 and 160,430.52 is: 221,385.99
Step by Step Solution
- Step 1: Write the proportion equation
287,779.56 : 397,121.22 = 160,430.52 : x - Step 2: Convert to fraction form
287,779.56/397,121.22 = 160,430.52/x - Step 3: Cross multiply
287,779.56x = 397,121.22 × 160,430.52 - Step 4: Simplify right side
287,779.56x = 63,710,363,827.63 - Step 5: Solve for x
x = 63,710,363,827.63/287,779.56 - Step 6: Final answer
x = 221,385.99
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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.