Finding the Fourth Proportional to 320,988.42, 481,070.54 and 121,070.70
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Solution
The fourth proportional to 320,988.42, 481,070.54 and 121,070.70 is: 181,450.62
Step by Step Solution
- Step 1: Write the proportion equation
320,988.42 : 481,070.54 = 121,070.70 : x - Step 2: Convert to fraction form
320,988.42/481,070.54 = 121,070.70/x - Step 3: Cross multiply
320,988.42x = 481,070.54 × 121,070.70 - Step 4: Simplify right side
320,988.42x = 58,243,547,329.85 - Step 5: Solve for x
x = 58,243,547,329.85/320,988.42 - Step 6: Final answer
x = 181,450.62
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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.