Finding the Fourth Proportional to 418,861.58, 578,229.74 and 257,854.64
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Solution
The fourth proportional to 418,861.58, 578,229.74 and 257,854.64 is: 355,962.99
Step by Step Solution
- Step 1: Write the proportion equation
418,861.58 : 578,229.74 = 257,854.64 : x - Step 2: Convert to fraction form
418,861.58/578,229.74 = 257,854.64/x - Step 3: Cross multiply
418,861.58x = 578,229.74 × 257,854.64 - Step 4: Simplify right side
418,861.58x = 149,099,221,444.99 - Step 5: Solve for x
x = 149,099,221,444.99/418,861.58 - Step 6: Final answer
x = 355,962.99
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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.