Finding the Fourth Proportional to 309,753.93, 427,518.95 and 202,415.97
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Solution
The fourth proportional to 309,753.93, 427,518.95 and 202,415.97 is: 279,372.28
Step by Step Solution
- Step 1: Write the proportion equation
309,753.93 : 427,518.95 = 202,415.97 : x - Step 2: Convert to fraction form
309,753.93/427,518.95 = 202,415.97/x - Step 3: Cross multiply
309,753.93x = 427,518.95 × 202,415.97 - Step 4: Simplify right side
309,753.93x = 86,536,662,957.63 - Step 5: Solve for x
x = 86,536,662,957.63/309,753.93 - Step 6: Final answer
x = 279,372.28
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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.