Finding the Fourth Proportional to 216,864.81, 299,237.73 and 136,235.23
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Solution
The fourth proportional to 216,864.81, 299,237.73 and 136,235.23 is: 187,982.18
Step by Step Solution
- Step 1: Write the proportion equation
216,864.81 : 299,237.73 = 136,235.23 : x - Step 2: Convert to fraction form
216,864.81/299,237.73 = 136,235.23/x - Step 3: Cross multiply
216,864.81x = 299,237.73 × 136,235.23 - Step 4: Simplify right side
216,864.81x = 40,766,719,712.25 - Step 5: Solve for x
x = 40,766,719,712.25/216,864.81 - Step 6: Final answer
x = 187,982.18
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1.5x scale
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.