Finding the Fourth Proportional to 401,438.62, 554,009.79 and 231,683.68
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Solution
The fourth proportional to 401,438.62, 554,009.79 and 231,683.68 is: 319,737.61
Step by Step Solution
- Step 1: Write the proportion equation
401,438.62 : 554,009.79 = 231,683.68 : x - Step 2: Convert to fraction form
401,438.62/554,009.79 = 231,683.68/x - Step 3: Cross multiply
401,438.62x = 554,009.79 × 231,683.68 - Step 4: Simplify right side
401,438.62x = 128,355,026,903.23 - Step 5: Solve for x
x = 128,355,026,903.23/401,438.62 - Step 6: Final answer
x = 319,737.61
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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.