Finding the Fourth Proportional to 386,427.70, 579,641.55 and 102,117.70
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Solution
The fourth proportional to 386,427.70, 579,641.55 and 102,117.70 is: 153,176.55
Step by Step Solution
- Step 1: Write the proportion equation
386,427.70 : 579,641.55 = 102,117.70 : x - Step 2: Convert to fraction form
386,427.70/579,641.55 = 102,117.70/x - Step 3: Cross multiply
386,427.70x = 579,641.55 × 102,117.70 - Step 4: Simplify right side
386,427.70x = 59,191,661,910.44 - Step 5: Solve for x
x = 59,191,661,910.44/386,427.70 - Step 6: Final answer
x = 153,176.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.