Finding the Fourth Proportional to 398,192.40, 549,465.66 and 245,206.08
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Solution
The fourth proportional to 398,192.40, 549,465.66 and 245,206.08 is: 338,359.85
Step by Step Solution
- Step 1: Write the proportion equation
398,192.40 : 549,465.66 = 245,206.08 : x - Step 2: Convert to fraction form
398,192.40/549,465.66 = 245,206.08/x - Step 3: Cross multiply
398,192.40x = 549,465.66 × 245,206.08 - Step 4: Simplify right side
398,192.40x = 134,732,320,583.21 - Step 5: Solve for x
x = 134,732,320,583.21/398,192.40 - Step 6: Final answer
x = 338,359.85
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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.