Finding the Fourth Proportional to 216,787.91, 299,167.31 and 121,313.06
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Solution
The fourth proportional to 216,787.91, 299,167.31 and 121,313.06 is: 167,412.01
Step by Step Solution
- Step 1: Write the proportion equation
216,787.91 : 299,167.31 = 121,313.06 : x - Step 2: Convert to fraction form
216,787.91/299,167.31 = 121,313.06/x - Step 3: Cross multiply
216,787.91x = 299,167.31 × 121,313.06 - Step 4: Simplify right side
216,787.91x = 36,292,900,332.23 - Step 5: Solve for x
x = 36,292,900,332.23/216,787.91 - Step 6: Final answer
x = 167,412.01
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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.