Finding the Fourth Proportional to 221,073.84, 305,036.28 and 130,425.12
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Solution
The fourth proportional to 221,073.84, 305,036.28 and 130,425.12 is: 179,959.75
Step by Step Solution
- Step 1: Write the proportion equation
221,073.84 : 305,036.28 = 130,425.12 : x - Step 2: Convert to fraction form
221,073.84/305,036.28 = 130,425.12/x - Step 3: Cross multiply
221,073.84x = 305,036.28 × 130,425.12 - Step 4: Simplify right side
221,073.84x = 39,784,393,423.35 - Step 5: Solve for x
x = 39,784,393,423.35/221,073.84 - Step 6: Final answer
x = 179,959.75
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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.