Finding the Fourth Proportional to 285,351,724.80, 393,818,997.12 and 169,458,220.80
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Solution
The fourth proportional to 285,351,724.80, 393,818,997.12 and 169,458,220.80 is: 233,872,308.34
Step by Step Solution
- Step 1: Write the proportion equation
285,351,724.80 : 393,818,997.12 = 169,458,220.80 : x - Step 2: Convert to fraction form
285,351,724.80/393,818,997.12 = 169,458,220.80/x - Step 3: Cross multiply
285,351,724.80x = 393,818,997.12 × 169,458,220.80 - Step 4: Simplify right side
285,351,724.80x = 66,735,866,569,195,528 - Step 5: Solve for x
x = 66,735,866,569,195,528/285,351,724.80 - Step 6: Final answer
x = 233,872,308.34
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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.