Finding the Fourth Proportional to 319,407.71, 440,643.44 and 210,371.18
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Solution
The fourth proportional to 319,407.71, 440,643.44 and 210,371.18 is: 290,220.55
Step by Step Solution
- Step 1: Write the proportion equation
319,407.71 : 440,643.44 = 210,371.18 : x - Step 2: Convert to fraction form
319,407.71/440,643.44 = 210,371.18/x - Step 3: Cross multiply
319,407.71x = 440,643.44 × 210,371.18 - Step 4: Simplify right side
319,407.71x = 92,698,678,754.77 - Step 5: Solve for x
x = 92,698,678,754.77/319,407.71 - Step 6: Final answer
x = 290,220.55
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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.