Finding the Fourth Proportional to 285,081,472.24, 393,412,431.68 and 154,701,280.24
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Solution
The fourth proportional to 285,081,472.24, 393,412,431.68 and 154,701,280.24 is: 213,487,766.73
Step by Step Solution
- Step 1: Write the proportion equation
285,081,472.24 : 393,412,431.68 = 154,701,280.24 : x - Step 2: Convert to fraction form
285,081,472.24/393,412,431.68 = 154,701,280.24/x - Step 3: Cross multiply
285,081,472.24x = 393,412,431.68 × 154,701,280.24 - Step 4: Simplify right side
285,081,472.24x = 60,861,406,843,227,536 - Step 5: Solve for x
x = 60,861,406,843,227,536/285,081,472.24 - Step 6: Final answer
x = 213,487,766.73
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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.