Finding the Fourth Proportional to 210,806.16, 290,908.68 and 115,312.02
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Solution
The fourth proportional to 210,806.16, 290,908.68 and 115,312.02 is: 159,128.50
Step by Step Solution
- Step 1: Write the proportion equation
210,806.16 : 290,908.68 = 115,312.02 : x - Step 2: Convert to fraction form
210,806.16/290,908.68 = 115,312.02/x - Step 3: Cross multiply
210,806.16x = 290,908.68 × 115,312.02 - Step 4: Simplify right side
210,806.16x = 33,545,267,526.33 - Step 5: Solve for x
x = 33,545,267,526.33/210,806.16 - Step 6: Final answer
x = 159,128.50
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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.