Finding the Fourth Proportional to 438,615.63, 657,946.95 and 139,118.94
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Solution
The fourth proportional to 438,615.63, 657,946.95 and 139,118.94 is: 208,685.87
Step by Step Solution
- Step 1: Write the proportion equation
438,615.63 : 657,946.95 = 139,118.94 : x - Step 2: Convert to fraction form
438,615.63/657,946.95 = 139,118.94/x - Step 3: Cross multiply
438,615.63x = 657,946.95 × 139,118.94 - Step 4: Simplify right side
438,615.63x = 91,532,882,260.23 - Step 5: Solve for x
x = 91,532,882,260.23/438,615.63 - Step 6: Final answer
x = 208,685.87
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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.