Finding the Fourth Proportional to 282,782.21, 390,239.69 and 155,459.97
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Solution
The fourth proportional to 282,782.21, 390,239.69 and 155,459.97 is: 214,534.89
Step by Step Solution
- Step 1: Write the proportion equation
282,782.21 : 390,239.69 = 155,459.97 : x - Step 2: Convert to fraction form
282,782.21/390,239.69 = 155,459.97/x - Step 3: Cross multiply
282,782.21x = 390,239.69 × 155,459.97 - Step 4: Simplify right side
282,782.21x = 60,666,648,937.66 - Step 5: Solve for x
x = 60,666,648,937.66/282,782.21 - Step 6: Final answer
x = 214,534.89
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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.