Finding the Fourth Proportional to 312,329.57, 431,014.95 and 169,089.62
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Solution
The fourth proportional to 312,329.57, 431,014.95 and 169,089.62 is: 233,343.75
Step by Step Solution
- Step 1: Write the proportion equation
312,329.57 : 431,014.95 = 169,089.62 : x - Step 2: Convert to fraction form
312,329.57/431,014.95 = 169,089.62/x - Step 3: Cross multiply
312,329.57x = 431,014.95 × 169,089.62 - Step 4: Simplify right side
312,329.57x = 72,880,151,954.74 - Step 5: Solve for x
x = 72,880,151,954.74/312,329.57 - Step 6: Final answer
x = 233,343.75
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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.