Finding the Fourth Proportional to 531,102.80, 732,912.64 and 289,387.36
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Solution
The fourth proportional to 531,102.80, 732,912.64 and 289,387.36 is: 399,349.53
Step by Step Solution
- Step 1: Write the proportion equation
531,102.80 : 732,912.64 = 289,387.36 : x - Step 2: Convert to fraction form
531,102.80/732,912.64 = 289,387.36/x - Step 3: Cross multiply
531,102.80x = 732,912.64 × 289,387.36 - Step 4: Simplify right side
531,102.80x = 212,095,654,000.23 - Step 5: Solve for x
x = 212,095,654,000.23/531,102.80 - Step 6: Final answer
x = 399,349.53
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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.