Finding the Fourth Proportional to 371,400.48, 512,534.80 and 218,445.14
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Solution
The fourth proportional to 371,400.48, 512,534.80 and 218,445.14 is: 301,455.55
Step by Step Solution
- Step 1: Write the proportion equation
371,400.48 : 512,534.80 = 218,445.14 : x - Step 2: Convert to fraction form
371,400.48/512,534.80 = 218,445.14/x - Step 3: Cross multiply
371,400.48x = 512,534.80 × 218,445.14 - Step 4: Simplify right side
371,400.48x = 111,960,736,140.87 - Step 5: Solve for x
x = 111,960,736,140.87/371,400.48 - Step 6: Final answer
x = 301,455.55
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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.