Finding the Fourth Proportional to 278,931.58, 418,162.26 and 121,041.12
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Solution
The fourth proportional to 278,931.58, 418,162.26 and 121,041.12 is: 181,459.66
Step by Step Solution
- Step 1: Write the proportion equation
278,931.58 : 418,162.26 = 121,041.12 : x - Step 2: Convert to fraction form
278,931.58/418,162.26 = 121,041.12/x - Step 3: Cross multiply
278,931.58x = 418,162.26 × 121,041.12 - Step 4: Simplify right side
278,931.58x = 50,614,828,292.13 - Step 5: Solve for x
x = 50,614,828,292.13/278,931.58 - Step 6: Final answer
x = 181,459.66
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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.