Finding the Fourth Proportional to 420,371.80, 580,102.14 and 229,387.48
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Solution
The fourth proportional to 420,371.80, 580,102.14 and 229,387.48 is: 316,548.75
Step by Step Solution
- Step 1: Write the proportion equation
420,371.80 : 580,102.14 = 229,387.48 : x - Step 2: Convert to fraction form
420,371.80/580,102.14 = 229,387.48/x - Step 3: Cross multiply
420,371.80x = 580,102.14 × 229,387.48 - Step 4: Simplify right side
420,371.80x = 133,068,168,037.21 - Step 5: Solve for x
x = 133,068,168,037.21/420,371.80 - Step 6: Final answer
x = 316,548.75
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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.