Finding the Fourth Proportional to 319,319.70, 478,979.55 and 283,377.30
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Solution
The fourth proportional to 319,319.70, 478,979.55 and 283,377.30 is: 425,065.95
Step by Step Solution
- Step 1: Write the proportion equation
319,319.70 : 478,979.55 = 283,377.30 : x - Step 2: Convert to fraction form
319,319.70/478,979.55 = 283,377.30/x - Step 3: Cross multiply
319,319.70x = 478,979.55 × 283,377.30 - Step 4: Simplify right side
319,319.70x = 135,731,931,634.22 - Step 5: Solve for x
x = 135,731,931,634.22/319,319.70 - Step 6: Final answer
x = 425,065.95
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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.