Finding the Fourth Proportional to 312,154,507.68, 430,753,018.86 and 171,025,534.68
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Solution
The fourth proportional to 312,154,507.68, 430,753,018.86 and 171,025,534.68 is: 236,004,169.58
Step by Step Solution
- Step 1: Write the proportion equation
312,154,507.68 : 430,753,018.86 = 171,025,534.68 : x - Step 2: Convert to fraction form
312,154,507.68/430,753,018.86 = 171,025,534.68/x - Step 3: Cross multiply
312,154,507.68x = 430,753,018.86 × 171,025,534.68 - Step 4: Simplify right side
312,154,507.68x = 73,669,765,365,555,632 - Step 5: Solve for x
x = 73,669,765,365,555,632/312,154,507.68 - Step 6: Final answer
x = 236,004,169.58
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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.