Finding the Fourth Proportional to 339,487.80, 509,231.70 and 192,031.80
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Solution
The fourth proportional to 339,487.80, 509,231.70 and 192,031.80 is: 288,047.70
Step by Step Solution
- Step 1: Write the proportion equation
339,487.80 : 509,231.70 = 192,031.80 : x - Step 2: Convert to fraction form
339,487.80/509,231.70 = 192,031.80/x - Step 3: Cross multiply
339,487.80x = 509,231.70 × 192,031.80 - Step 4: Simplify right side
339,487.80x = 97,788,679,968.06 - Step 5: Solve for x
x = 97,788,679,968.06/339,487.80 - Step 6: Final answer
x = 288,047.70
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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.