Finding the Fourth Proportional to 390,075.36, 585,135.72 and 109,614.48
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Solution
The fourth proportional to 390,075.36, 585,135.72 and 109,614.48 is: 164,428.09
Step by Step Solution
- Step 1: Write the proportion equation
390,075.36 : 585,135.72 = 109,614.48 : x - Step 2: Convert to fraction form
390,075.36/585,135.72 = 109,614.48/x - Step 3: Cross multiply
390,075.36x = 585,135.72 × 109,614.48 - Step 4: Simplify right side
390,075.36x = 64,139,347,677.23 - Step 5: Solve for x
x = 64,139,347,677.23/390,075.36 - Step 6: Final answer
x = 164,428.09
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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.