Finding the Fourth Proportional to 393,407.48, 542,901.35 and 221,325.62
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Solution
The fourth proportional to 393,407.48, 542,901.35 and 221,325.62 is: 305,428.80
Step by Step Solution
- Step 1: Write the proportion equation
393,407.48 : 542,901.35 = 221,325.62 : x - Step 2: Convert to fraction form
393,407.48/542,901.35 = 221,325.62/x - Step 3: Cross multiply
393,407.48x = 542,901.35 × 221,325.62 - Step 4: Simplify right side
393,407.48x = 120,157,975,726.39 - Step 5: Solve for x
x = 120,157,975,726.39/393,407.48 - Step 6: Final answer
x = 305,428.80
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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.