Finding the Fourth Proportional to 420,386.20, 580,128.18 and 229,402.84
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Solution
The fourth proportional to 420,386.20, 580,128.18 and 229,402.84 is: 316,573.31
Step by Step Solution
- Step 1: Write the proportion equation
420,386.20 : 580,128.18 = 229,402.84 : x - Step 2: Convert to fraction form
420,386.20/580,128.18 = 229,402.84/x - Step 3: Cross multiply
420,386.20x = 580,128.18 × 229,402.84 - Step 4: Simplify right side
420,386.20x = 133,083,052,056.03 - Step 5: Solve for x
x = 133,083,052,056.03/420,386.20 - Step 6: Final answer
x = 316,573.31
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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.