Finding the Fourth Proportional to 421,145.64, 631,538.64 and 243,775.08
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Solution
The fourth proportional to 421,145.64, 631,538.64 and 243,775.08 is: 365,558.53
Step by Step Solution
- Step 1: Write the proportion equation
421,145.64 : 631,538.64 = 243,775.08 : x - Step 2: Convert to fraction form
421,145.64/631,538.64 = 243,775.08/x - Step 3: Cross multiply
421,145.64x = 631,538.64 × 243,775.08 - Step 4: Simplify right side
421,145.64x = 153,953,382,489.09 - Step 5: Solve for x
x = 153,953,382,489.09/421,145.64 - Step 6: Final answer
x = 365,558.53
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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.