Finding the Fourth Proportional to 319,079.70, 478,619.55 and 161,615.70
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Solution
The fourth proportional to 319,079.70, 478,619.55 and 161,615.70 is: 242,423.55
Step by Step Solution
- Step 1: Write the proportion equation
319,079.70 : 478,619.55 = 161,615.70 : x - Step 2: Convert to fraction form
319,079.70/478,619.55 = 161,615.70/x - Step 3: Cross multiply
319,079.70x = 478,619.55 × 161,615.70 - Step 4: Simplify right side
319,079.70x = 77,352,433,606.94 - Step 5: Solve for x
x = 77,352,433,606.94/319,079.70 - Step 6: Final answer
x = 242,423.55
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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.