Finding the Fourth Proportional to 283,317.19, 390,976.82 and 155,992.79
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Solution
The fourth proportional to 283,317.19, 390,976.82 and 155,992.79 is: 215,269.55
Step by Step Solution
- Step 1: Write the proportion equation
283,317.19 : 390,976.82 = 155,992.79 : x - Step 2: Convert to fraction form
283,317.19/390,976.82 = 155,992.79/x - Step 3: Cross multiply
283,317.19x = 390,976.82 × 155,992.79 - Step 4: Simplify right side
283,317.19x = 60,989,564,437.79 - Step 5: Solve for x
x = 60,989,564,437.79/283,317.19 - Step 6: Final answer
x = 215,269.55
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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.