Finding the Fourth Proportional to 311,875.80, 467,813.70 and 193,777.80
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Solution
The fourth proportional to 311,875.80, 467,813.70 and 193,777.80 is: 290,666.70
Step by Step Solution
- Step 1: Write the proportion equation
311,875.80 : 467,813.70 = 193,777.80 : x - Step 2: Convert to fraction form
311,875.80/467,813.70 = 193,777.80/x - Step 3: Cross multiply
311,875.80x = 467,813.70 × 193,777.80 - Step 4: Simplify right side
311,875.80x = 90,651,909,595.86 - Step 5: Solve for x
x = 90,651,909,595.86/311,875.80 - Step 6: Final answer
x = 290,666.70
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1.5x scale
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.