Finding the Fourth Proportional to 318,939.70, 478,409.55 and 97,323.70
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Solution
The fourth proportional to 318,939.70, 478,409.55 and 97,323.70 is: 145,985.55
Step by Step Solution
- Step 1: Write the proportion equation
318,939.70 : 478,409.55 = 97,323.70 : x - Step 2: Convert to fraction form
318,939.70/478,409.55 = 97,323.70/x - Step 3: Cross multiply
318,939.70x = 478,409.55 × 97,323.70 - Step 4: Simplify right side
318,939.70x = 46,560,587,521.34 - Step 5: Solve for x
x = 46,560,587,521.34/318,939.70 - Step 6: Final answer
x = 145,985.55
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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.