Finding the Fourth Proportional to 318,426.87, 439,426.49 and 180,631.98
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Solution
The fourth proportional to 318,426.87, 439,426.49 and 180,631.98 is: 249,270.66
Step by Step Solution
- Step 1: Write the proportion equation
318,426.87 : 439,426.49 = 180,631.98 : x - Step 2: Convert to fraction form
318,426.87/439,426.49 = 180,631.98/x - Step 3: Cross multiply
318,426.87x = 439,426.49 × 180,631.98 - Step 4: Simplify right side
318,426.87x = 79,374,476,049.99 - Step 5: Solve for x
x = 79,374,476,049.99/318,426.87 - Step 6: Final answer
x = 249,270.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.