Finding the Fourth Proportional to 877,520.14, 1,316,280.21 and 212,672.14
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Solution
The fourth proportional to 877,520.14, 1,316,280.21 and 212,672.14 is: 319,008.21
Step by Step Solution
- Step 1: Write the proportion equation
877,520.14 : 1,316,280.21 = 212,672.14 : x - Step 2: Convert to fraction form
877,520.14/1,316,280.21 = 212,672.14/x - Step 3: Cross multiply
877,520.14x = 1,316,280.21 × 212,672.14 - Step 4: Simplify right side
877,520.14x = 279,936,129,100.35 - Step 5: Solve for x
x = 279,936,129,100.35/877,520.14 - Step 6: Final answer
x = 319,008.21
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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.