Finding the Fourth Proportional to 402,135.13, 555,161.93 and 310,053.30
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Solution
The fourth proportional to 402,135.13, 555,161.93 and 310,053.30 is: 428,039.67
Step by Step Solution
- Step 1: Write the proportion equation
402,135.13 : 555,161.93 = 310,053.30 : x - Step 2: Convert to fraction form
402,135.13/555,161.93 = 310,053.30/x - Step 3: Cross multiply
402,135.13x = 555,161.93 × 310,053.30 - Step 4: Simplify right side
402,135.13x = 172,129,788,430.87 - Step 5: Solve for x
x = 172,129,788,430.87/402,135.13 - Step 6: Final answer
x = 428,039.67
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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.