Finding the Fourth Proportional to 658,138.98, 987,208.47 and 159,502.98
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Solution
The fourth proportional to 658,138.98, 987,208.47 and 159,502.98 is: 239,254.47
Step by Step Solution
- Step 1: Write the proportion equation
658,138.98 : 987,208.47 = 159,502.98 : x - Step 2: Convert to fraction form
658,138.98/987,208.47 = 159,502.98/x - Step 3: Cross multiply
658,138.98x = 987,208.47 × 159,502.98 - Step 4: Simplify right side
658,138.98x = 157,462,692,846.24 - Step 5: Solve for x
x = 157,462,692,846.24/658,138.98 - Step 6: Final answer
x = 239,254.47
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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.