Finding the Fourth Proportional to 290,985.79, 436,497.14 and 91,314.06
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Solution
The fourth proportional to 290,985.79, 436,497.14 and 91,314.06 is: 136,976.88
Step by Step Solution
- Step 1: Write the proportion equation
290,985.79 : 436,497.14 = 91,314.06 : x - Step 2: Convert to fraction form
290,985.79/436,497.14 = 91,314.06/x - Step 3: Cross multiply
290,985.79x = 436,497.14 × 91,314.06 - Step 4: Simplify right side
290,985.79x = 39,858,326,031.79 - Step 5: Solve for x
x = 39,858,326,031.79/290,985.79 - Step 6: Final answer
x = 136,976.88
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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.