Finding the Fourth Proportional to 311,355.40, 466,968.30 and 86,657.80
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Solution
The fourth proportional to 311,355.40, 466,968.30 and 86,657.80 is: 129,968.66
Step by Step Solution
- Step 1: Write the proportion equation
311,355.40 : 466,968.30 = 86,657.80 : x - Step 2: Convert to fraction form
311,355.40/466,968.30 = 86,657.80/x - Step 3: Cross multiply
311,355.40x = 466,968.30 × 86,657.80 - Step 4: Simplify right side
311,355.40x = 40,466,445,547.74 - Step 5: Solve for x
x = 40,466,445,547.74/311,355.40 - Step 6: Final answer
x = 129,968.66
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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.