Finding the Fourth Proportional to 403,972.80, 557,277.30 and 308,313.48
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Solution
The fourth proportional to 403,972.80, 557,277.30 and 308,313.48 is: 425,316.02
Step by Step Solution
- Step 1: Write the proportion equation
403,972.80 : 557,277.30 = 308,313.48 : x - Step 2: Convert to fraction form
403,972.80/557,277.30 = 308,313.48/x - Step 3: Cross multiply
403,972.80x = 557,277.30 × 308,313.48 - Step 4: Simplify right side
403,972.80x = 171,816,103,688.00 - Step 5: Solve for x
x = 171,816,103,688.00/403,972.80 - Step 6: Final answer
x = 425,316.02
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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.