Finding the Fourth Proportional to 319,316.70, 478,975.05 and 283,374.30
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Solution
The fourth proportional to 319,316.70, 478,975.05 and 283,374.30 is: 425,061.45
Step by Step Solution
- Step 1: Write the proportion equation
319,316.70 : 478,975.05 = 283,374.30 : x - Step 2: Convert to fraction form
319,316.70/478,975.05 = 283,374.30/x - Step 3: Cross multiply
319,316.70x = 478,975.05 × 283,374.30 - Step 4: Simplify right side
319,316.70x = 135,729,219,511.22 - Step 5: Solve for x
x = 135,729,219,511.22/319,316.70 - Step 6: Final answer
x = 425,061.45
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1.5x scale
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.