Finding the Fourth Proportional to 221,784.21, 306,164.38 and 129,890.71
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Solution
The fourth proportional to 221,784.21, 306,164.38 and 129,890.71 is: 179,309.02
Step by Step Solution
- Step 1: Write the proportion equation
221,784.21 : 306,164.38 = 129,890.71 : x - Step 2: Convert to fraction form
221,784.21/306,164.38 = 129,890.71/x - Step 3: Cross multiply
221,784.21x = 306,164.38 × 129,890.71 - Step 4: Simplify right side
221,784.21x = 39,767,908,383.23 - Step 5: Solve for x
x = 39,767,908,383.23/221,784.21 - Step 6: Final answer
x = 179,309.02
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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.