Finding the Fourth Proportional to 280,515.15, 387,113.99 and 153,194.49
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Solution
The fourth proportional to 280,515.15, 387,113.99 and 153,194.49 is: 211,410.08
Step by Step Solution
- Step 1: Write the proportion equation
280,515.15 : 387,113.99 = 153,194.49 : x - Step 2: Convert to fraction form
280,515.15/387,113.99 = 153,194.49/x - Step 3: Cross multiply
280,515.15x = 387,113.99 × 153,194.49 - Step 4: Simplify right side
280,515.15x = 59,303,729,503.94 - Step 5: Solve for x
x = 59,303,729,503.94/280,515.15 - Step 6: Final answer
x = 211,410.08
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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.