Finding the Fourth Proportional to 210,812.16, 290,916.99 and 115,318.02
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Solution
The fourth proportional to 210,812.16, 290,916.99 and 115,318.02 is: 159,136.79
Step by Step Solution
- Step 1: Write the proportion equation
210,812.16 : 290,916.99 = 115,318.02 : x - Step 2: Convert to fraction form
210,812.16/290,916.99 = 115,318.02/x - Step 3: Cross multiply
210,812.16x = 290,916.99 × 115,318.02 - Step 4: Simplify right side
210,812.16x = 33,547,971,271.16 - Step 5: Solve for x
x = 33,547,971,271.16/210,812.16 - Step 6: Final answer
x = 159,136.79
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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.