Finding the Fourth Proportional to 612,117.40, 918,176.10 and 257,531.80
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Solution
The fourth proportional to 612,117.40, 918,176.10 and 257,531.80 is: 386,297.70
Step by Step Solution
- Step 1: Write the proportion equation
612,117.40 : 918,176.10 = 257,531.80 : x - Step 2: Convert to fraction form
612,117.40/918,176.10 = 257,531.80/x - Step 3: Cross multiply
612,117.40x = 918,176.10 × 257,531.80 - Step 4: Simplify right side
612,117.40x = 236,459,543,749.98 - Step 5: Solve for x
x = 236,459,543,749.98/612,117.40 - Step 6: Final answer
x = 386,297.70
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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.