Finding the Fourth Proportional to 405,436.32, 559,409.12 and 242,060.99
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Solution
The fourth proportional to 405,436.32, 559,409.12 and 242,060.99 is: 333,988.65
Step by Step Solution
- Step 1: Write the proportion equation
405,436.32 : 559,409.12 = 242,060.99 : x - Step 2: Convert to fraction form
405,436.32/559,409.12 = 242,060.99/x - Step 3: Cross multiply
405,436.32x = 559,409.12 × 242,060.99 - Step 4: Simplify right side
405,436.32x = 135,411,128,830.49 - Step 5: Solve for x
x = 135,411,128,830.49/405,436.32 - Step 6: Final answer
x = 333,988.65
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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.