Finding the Fourth Proportional to 318,984.70, 478,461.14 and 119,290.41
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Solution
The fourth proportional to 318,984.70, 478,461.14 and 119,290.41 is: 178,929.66
Step by Step Solution
- Step 1: Write the proportion equation
318,984.70 : 478,461.14 = 119,290.41 : x - Step 2: Convert to fraction form
318,984.70/478,461.14 = 119,290.41/x - Step 3: Cross multiply
318,984.70x = 478,461.14 × 119,290.41 - Step 4: Simplify right side
318,984.70x = 57,075,822,570.91 - Step 5: Solve for x
x = 57,075,822,570.91/318,984.70 - Step 6: Final answer
x = 178,929.66
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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.