Finding the Fourth Proportional to 381,347.80, 526,129.62 and 217,887.02
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Solution
The fourth proportional to 381,347.80, 526,129.62 and 217,887.02 is: 300,609.61
Step by Step Solution
- Step 1: Write the proportion equation
381,347.80 : 526,129.62 = 217,887.02 : x - Step 2: Convert to fraction form
381,347.80/526,129.62 = 217,887.02/x - Step 3: Cross multiply
381,347.80x = 526,129.62 × 217,887.02 - Step 4: Simplify right side
381,347.80x = 114,636,815,035.53 - Step 5: Solve for x
x = 114,636,815,035.53/381,347.80 - Step 6: Final answer
x = 300,609.61
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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.