Finding the Fourth Proportional to 420,389.38, 580,149.66 and 229,415.08
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Solution
The fourth proportional to 420,389.38, 580,149.66 and 229,415.08 is: 316,599.53
Step by Step Solution
- Step 1: Write the proportion equation
420,389.38 : 580,149.66 = 229,415.08 : x - Step 2: Convert to fraction form
420,389.38/580,149.66 = 229,415.08/x - Step 3: Cross multiply
420,389.38x = 580,149.66 × 229,415.08 - Step 4: Simplify right side
420,389.38x = 133,095,080,660.87 - Step 5: Solve for x
x = 133,095,080,660.87/420,389.38 - Step 6: Final answer
x = 316,599.53
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1.5x scale
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.