Finding the Fourth Proportional to 239,630.48, 330,706.11 and 137,688.94
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Solution
The fourth proportional to 239,630.48, 330,706.11 and 137,688.94 is: 190,019.96
Step by Step Solution
- Step 1: Write the proportion equation
239,630.48 : 330,706.11 = 137,688.94 : x - Step 2: Convert to fraction form
239,630.48/330,706.11 = 137,688.94/x - Step 3: Cross multiply
239,630.48x = 330,706.11 × 137,688.94 - Step 4: Simplify right side
239,630.48x = 45,534,573,048.98 - Step 5: Solve for x
x = 45,534,573,048.98/239,630.48 - Step 6: Final answer
x = 190,019.96
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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.