Finding the Fourth Proportional to 216,130.79, 298,259.75 and 120,636.65
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Solution
The fourth proportional to 216,130.79, 298,259.75 and 120,636.65 is: 166,478.17
Step by Step Solution
- Step 1: Write the proportion equation
216,130.79 : 298,259.75 = 120,636.65 : x - Step 2: Convert to fraction form
216,130.79/298,259.75 = 120,636.65/x - Step 3: Cross multiply
216,130.79x = 298,259.75 × 120,636.65 - Step 4: Simplify right side
216,130.79x = 35,981,058,117.08 - Step 5: Solve for x
x = 35,981,058,117.08/216,130.79 - Step 6: Final answer
x = 166,478.17
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1.5x scale
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.