Finding the Fourth Proportional to 438,615.13, 657,946.19 and 139,118.44
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Solution
The fourth proportional to 438,615.13, 657,946.19 and 139,118.44 is: 208,685.11
Step by Step Solution
- Step 1: Write the proportion equation
438,615.13 : 657,946.19 = 139,118.44 : x - Step 2: Convert to fraction form
438,615.13/657,946.19 = 139,118.44/x - Step 3: Cross multiply
438,615.13x = 657,946.19 × 139,118.44 - Step 4: Simplify right side
438,615.13x = 91,532,447,556.74 - Step 5: Solve for x
x = 91,532,447,556.74/438,615.13 - Step 6: Final answer
x = 208,685.11
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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.