Finding the Fourth Proportional to 223,531.21, 308,460.61 and 128,044.06
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Solution
The fourth proportional to 223,531.21, 308,460.61 and 128,044.06 is: 176,693.66
Step by Step Solution
- Step 1: Write the proportion equation
223,531.21 : 308,460.61 = 128,044.06 : x - Step 2: Convert to fraction form
223,531.21/308,460.61 = 128,044.06/x - Step 3: Cross multiply
223,531.21x = 308,460.61 × 128,044.06 - Step 4: Simplify right side
223,531.21x = 39,496,547,523.13 - Step 5: Solve for x
x = 39,496,547,523.13/223,531.21 - Step 6: Final answer
x = 176,693.66
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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.