Finding the Fourth Proportional to 210,867.30, 290,998.98 and 115,378.02
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Solution
The fourth proportional to 210,867.30, 290,998.98 and 115,378.02 is: 159,222.82
Step by Step Solution
- Step 1: Write the proportion equation
210,867.30 : 290,998.98 = 115,378.02 : x - Step 2: Convert to fraction form
210,867.30/290,998.98 = 115,378.02/x - Step 3: Cross multiply
210,867.30x = 290,998.98 × 115,378.02 - Step 4: Simplify right side
210,867.30x = 33,574,886,134.42 - Step 5: Solve for x
x = 33,574,886,134.42/210,867.30 - Step 6: Final answer
x = 159,222.82
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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.