Finding the Fourth Proportional to 403,122.12, 556,313.58 and 221,854.92
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Solution
The fourth proportional to 403,122.12, 556,313.58 and 221,854.92 is: 306,162.57
Step by Step Solution
- Step 1: Write the proportion equation
403,122.12 : 556,313.58 = 221,854.92 : x - Step 2: Convert to fraction form
403,122.12/556,313.58 = 221,854.92/x - Step 3: Cross multiply
403,122.12x = 556,313.58 × 221,854.92 - Step 4: Simplify right side
403,122.12x = 123,420,904,785.81 - Step 5: Solve for x
x = 123,420,904,785.81/403,122.12 - Step 6: Final answer
x = 306,162.57
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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.