Finding the Fourth Proportional to 357,974.76, 493,964.26 and 286,328.68
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Solution
The fourth proportional to 357,974.76, 493,964.26 and 286,328.68 is: 395,100.86
Step by Step Solution
- Step 1: Write the proportion equation
357,974.76 : 493,964.26 = 286,328.68 : x - Step 2: Convert to fraction form
357,974.76/493,964.26 = 286,328.68/x - Step 3: Cross multiply
357,974.76x = 493,964.26 × 286,328.68 - Step 4: Simplify right side
357,974.76x = 141,436,134,532.98 - Step 5: Solve for x
x = 141,436,134,532.98/357,974.76 - Step 6: Final answer
x = 395,100.86
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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.