Finding the Fourth Proportional to 285,990.14, 393,908.77 and 213,159.63
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Solution
The fourth proportional to 285,990.14, 393,908.77 and 213,159.63 is: 293,595.61
Step by Step Solution
- Step 1: Write the proportion equation
285,990.14 : 393,908.77 = 213,159.63 : x - Step 2: Convert to fraction form
285,990.14/393,908.77 = 213,159.63/x - Step 3: Cross multiply
285,990.14x = 393,908.77 × 213,159.63 - Step 4: Simplify right side
285,990.14x = 83,965,447,666.96 - Step 5: Solve for x
x = 83,965,447,666.96/285,990.14 - Step 6: Final answer
x = 293,595.61
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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.