Finding the Fourth Proportional to 285,156.81, 393,511.64 and 157,829.67
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Solution
The fourth proportional to 285,156.81, 393,511.64 and 157,829.67 is: 217,802.31
Step by Step Solution
- Step 1: Write the proportion equation
285,156.81 : 393,511.64 = 157,829.67 : x - Step 2: Convert to fraction form
285,156.81/393,511.64 = 157,829.67/x - Step 3: Cross multiply
285,156.81x = 393,511.64 × 157,829.67 - Step 4: Simplify right side
285,156.81x = 62,107,811,493.21 - Step 5: Solve for x
x = 62,107,811,493.21/285,156.81 - Step 6: Final answer
x = 217,802.31
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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.