Finding the Fourth Proportional to 753,216.30, 1,129,715.10 and 220,681.80
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Solution
The fourth proportional to 753,216.30, 1,129,715.10 and 220,681.80 is: 330,990.66
Step by Step Solution
- Step 1: Write the proportion equation
753,216.30 : 1,129,715.10 = 220,681.80 : x - Step 2: Convert to fraction form
753,216.30/1,129,715.10 = 220,681.80/x - Step 3: Cross multiply
753,216.30x = 1,129,715.10 × 220,681.80 - Step 4: Simplify right side
753,216.30x = 249,307,561,755.18 - Step 5: Solve for x
x = 249,307,561,755.18/753,216.30 - Step 6: Final answer
x = 330,990.66
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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.