Finding the Fourth Proportional to 455,715.20, 683,572.80 and 219,000.80
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Solution
The fourth proportional to 455,715.20, 683,572.80 and 219,000.80 is: 328,501.20
Step by Step Solution
- Step 1: Write the proportion equation
455,715.20 : 683,572.80 = 219,000.80 : x - Step 2: Convert to fraction form
455,715.20/683,572.80 = 219,000.80/x - Step 3: Cross multiply
455,715.20x = 683,572.80 × 219,000.80 - Step 4: Simplify right side
455,715.20x = 149,702,990,058.24 - Step 5: Solve for x
x = 149,702,990,058.24/455,715.20 - Step 6: Final answer
x = 328,501.20
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Similar ratio
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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.