Finding the Fourth Proportional to 318,497.70, 477,746.55 and 128,957.70
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Solution
The fourth proportional to 318,497.70, 477,746.55 and 128,957.70 is: 193,436.55
Step by Step Solution
- Step 1: Write the proportion equation
318,497.70 : 477,746.55 = 128,957.70 : x - Step 2: Convert to fraction form
318,497.70/477,746.55 = 128,957.70/x - Step 3: Cross multiply
318,497.70x = 477,746.55 × 128,957.70 - Step 4: Simplify right side
318,497.70x = 61,609,096,270.94 - Step 5: Solve for x
x = 61,609,096,270.94/318,497.70 - Step 6: Final answer
x = 193,436.55
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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.