Finding the Fourth Proportional to 212,412,405.30, 318,618,607.95 and 155,016,777.30
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Solution
The fourth proportional to 212,412,405.30, 318,618,607.95 and 155,016,777.30 is: 232,525,165.95
Step by Step Solution
- Step 1: Write the proportion equation
212,412,405.30 : 318,618,607.95 = 155,016,777.30 : x - Step 2: Convert to fraction form
212,412,405.30/318,618,607.95 = 155,016,777.30/x - Step 3: Cross multiply
212,412,405.30x = 318,618,607.95 × 155,016,777.30 - Step 4: Simplify right side
212,412,405.30x = 49,391,229,792,221,160 - Step 5: Solve for x
x = 49,391,229,792,221,160/212,412,405.30 - Step 6: Final answer
x = 232,525,165.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.