Finding the Fourth Proportional to 285,295.42, 393,707.67 and 157,970.98
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Solution
The fourth proportional to 285,295.42, 393,707.67 and 157,970.98 is: 217,999.95
Step by Step Solution
- Step 1: Write the proportion equation
285,295.42 : 393,707.67 = 157,970.98 : x - Step 2: Convert to fraction form
285,295.42/393,707.67 = 157,970.98/x - Step 3: Cross multiply
285,295.42x = 393,707.67 × 157,970.98 - Step 4: Simplify right side
285,295.42x = 62,194,386,463.42 - Step 5: Solve for x
x = 62,194,386,463.42/285,295.42 - Step 6: Final answer
x = 217,999.95
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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.