Finding the Fourth Proportional to 438,409.20, 604,939.80 and 266,237.58
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Solution
The fourth proportional to 438,409.20, 604,939.80 and 266,237.58 is: 367,368.45
Step by Step Solution
- Step 1: Write the proportion equation
438,409.20 : 604,939.80 = 266,237.58 : x - Step 2: Convert to fraction form
438,409.20/604,939.80 = 266,237.58/x - Step 3: Cross multiply
438,409.20x = 604,939.80 × 266,237.58 - Step 4: Simplify right side
438,409.20x = 161,057,708,397.68 - Step 5: Solve for x
x = 161,057,708,397.68/438,409.20 - Step 6: Final answer
x = 367,368.45
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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.