Finding the Fourth Proportional to 192,403.80, 288,605.70 and 139,259.70
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Solution
The fourth proportional to 192,403.80, 288,605.70 and 139,259.70 is: 208,889.55
Step by Step Solution
- Step 1: Write the proportion equation
192,403.80 : 288,605.70 = 139,259.70 : x - Step 2: Convert to fraction form
192,403.80/288,605.70 = 139,259.70/x - Step 3: Cross multiply
192,403.80x = 288,605.70 × 139,259.70 - Step 4: Simplify right side
192,403.80x = 40,191,143,200.29 - Step 5: Solve for x
x = 40,191,143,200.29/192,403.80 - Step 6: Final answer
x = 208,889.55
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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.