Finding the Fourth Proportional to 289,193.10, 398,545.56 and 208,483.08
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Solution
The fourth proportional to 289,193.10, 398,545.56 and 208,483.08 is: 287,316.70
Step by Step Solution
- Step 1: Write the proportion equation
289,193.10 : 398,545.56 = 208,483.08 : x - Step 2: Convert to fraction form
289,193.10/398,545.56 = 208,483.08/x - Step 3: Cross multiply
289,193.10x = 398,545.56 × 208,483.08 - Step 4: Simplify right side
289,193.10x = 83,090,005,869.12 - Step 5: Solve for x
x = 83,090,005,869.12/289,193.10 - Step 6: Final answer
x = 287,316.70
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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.