Finding the Fourth Proportional to 313,630.42, 432,778.68 and 177,637.18
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Solution
The fourth proportional to 313,630.42, 432,778.68 and 177,637.18 is: 245,121.58
Step by Step Solution
- Step 1: Write the proportion equation
313,630.42 : 432,778.68 = 177,637.18 : x - Step 2: Convert to fraction form
313,630.42/432,778.68 = 177,637.18/x - Step 3: Cross multiply
313,630.42x = 432,778.68 × 177,637.18 - Step 4: Simplify right side
313,630.42x = 76,877,584,279.32 - Step 5: Solve for x
x = 76,877,584,279.32/313,630.42 - Step 6: Final answer
x = 245,121.58
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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.