Finding the Fourth Proportional to 289,172,319.05, 399,053,717.96 and 163,721,279.99
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Solution
The fourth proportional to 289,172,319.05, 399,053,717.96 and 163,721,279.99 is: 225,933,055.08
Step by Step Solution
- Step 1: Write the proportion equation
289,172,319.05 : 399,053,717.96 = 163,721,279.99 : x - Step 2: Convert to fraction form
289,172,319.05/399,053,717.96 = 163,721,279.99/x - Step 3: Cross multiply
289,172,319.05x = 399,053,717.96 × 163,721,279.99 - Step 4: Simplify right side
289,172,319.05x = 65,333,585,486,365,776 - Step 5: Solve for x
x = 65,333,585,486,365,776/289,172,319.05 - Step 6: Final answer
x = 225,933,055.08
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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.