Finding the Fourth Proportional to 420,921.28, 580,864.08 and 229,929.76
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Solution
The fourth proportional to 420,921.28, 580,864.08 and 229,929.76 is: 317,299.09
Step by Step Solution
- Step 1: Write the proportion equation
420,921.28 : 580,864.08 = 229,929.76 : x - Step 2: Convert to fraction form
420,921.28/580,864.08 = 229,929.76/x - Step 3: Cross multiply
420,921.28x = 580,864.08 × 229,929.76 - Step 4: Simplify right side
420,921.28x = 133,557,938,507.02 - Step 5: Solve for x
x = 133,557,938,507.02/420,921.28 - Step 6: Final answer
x = 317,299.09
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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.