Finding the Fourth Proportional to 285,272.88, 393,688.87 and 157,948.47
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Solution
The fourth proportional to 285,272.88, 393,688.87 and 157,948.47 is: 217,975.70
Step by Step Solution
- Step 1: Write the proportion equation
285,272.88 : 393,688.87 = 157,948.47 : x - Step 2: Convert to fraction form
285,272.88/393,688.87 = 157,948.47/x - Step 3: Cross multiply
285,272.88x = 393,688.87 × 157,948.47 - Step 4: Simplify right side
285,272.88x = 62,182,554,672.53 - Step 5: Solve for x
x = 62,182,554,672.53/285,272.88 - Step 6: Final answer
x = 217,975.70
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1.5x scale
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.