Finding the Fourth Proportional to 390,757.36, 539,248.96 and 229,615.96
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Solution
The fourth proportional to 390,757.36, 539,248.96 and 229,615.96 is: 316,872.26
Step by Step Solution
- Step 1: Write the proportion equation
390,757.36 : 539,248.96 = 229,615.96 : x - Step 2: Convert to fraction form
390,757.36/539,248.96 = 229,615.96/x - Step 3: Cross multiply
390,757.36x = 539,248.96 × 229,615.96 - Step 4: Simplify right side
390,757.36x = 123,820,167,629.40 - Step 5: Solve for x
x = 123,820,167,629.40/390,757.36 - Step 6: Final answer
x = 316,872.26
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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.