Finding the Fourth Proportional to 658,147.13, 987,220.70 and 159,511.13
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Solution
The fourth proportional to 658,147.13, 987,220.70 and 159,511.13 is: 239,266.69
Step by Step Solution
- Step 1: Write the proportion equation
658,147.13 : 987,220.70 = 159,511.13 : x - Step 2: Convert to fraction form
658,147.13/987,220.70 = 159,511.13/x - Step 3: Cross multiply
658,147.13x = 987,220.70 × 159,511.13 - Step 4: Simplify right side
658,147.13x = 157,472,683,682.73 - Step 5: Solve for x
x = 157,472,683,682.73/658,147.13 - Step 6: Final answer
x = 239,266.69
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Double scale
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Similar ratio
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1.5x scale
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.