Finding the Fourth Proportional to 396,416.18, 547,055.76 and 215,128.06
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Solution
The fourth proportional to 396,416.18, 547,055.76 and 215,128.06 is: 296,877.50
Step by Step Solution
- Step 1: Write the proportion equation
396,416.18 : 547,055.76 = 215,128.06 : x - Step 2: Convert to fraction form
396,416.18/547,055.76 = 215,128.06/x - Step 3: Cross multiply
396,416.18x = 547,055.76 × 215,128.06 - Step 4: Simplify right side
396,416.18x = 117,687,044,360.63 - Step 5: Solve for x
x = 117,687,044,360.63/396,416.18 - Step 6: Final answer
x = 296,877.50
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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.