Finding the Fourth Proportional to 289,515,884.81, 399,535,966.06 and 157,356,841.68
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Solution
The fourth proportional to 289,515,884.81, 399,535,966.06 and 157,356,841.68 is: 217,154,640.06
Step by Step Solution
- Step 1: Write the proportion equation
289,515,884.81 : 399,535,966.06 = 157,356,841.68 : x - Step 2: Convert to fraction form
289,515,884.81/399,535,966.06 = 157,356,841.68/x - Step 3: Cross multiply
289,515,884.81x = 399,535,966.06 × 157,356,841.68 - Step 4: Simplify right side
289,515,884.81x = 62,869,717,756,375,888 - Step 5: Solve for x
x = 62,869,717,756,375,888/289,515,884.81 - Step 6: Final answer
x = 217,154,640.06
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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.