Finding the Fourth Proportional to 312,154,509.68, 430,753,021.62 and 171,025,536.68
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Solution
The fourth proportional to 312,154,509.68, 430,753,021.62 and 171,025,536.68 is: 236,004,172.34
Step by Step Solution
- Step 1: Write the proportion equation
312,154,509.68 : 430,753,021.62 = 171,025,536.68 : x - Step 2: Convert to fraction form
312,154,509.68/430,753,021.62 = 171,025,536.68/x - Step 3: Cross multiply
312,154,509.68x = 430,753,021.62 × 171,025,536.68 - Step 4: Simplify right side
312,154,509.68x = 73,669,766,699,092,144 - Step 5: Solve for x
x = 73,669,766,699,092,144/312,154,509.68 - Step 6: Final answer
x = 236,004,172.34
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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.