Finding the Fourth Proportional to 316,467.76, 474,700.56 and 129,479.26
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Solution
The fourth proportional to 316,467.76, 474,700.56 and 129,479.26 is: 194,218.45
Step by Step Solution
- Step 1: Write the proportion equation
316,467.76 : 474,700.56 = 129,479.26 : x - Step 2: Convert to fraction form
316,467.76/474,700.56 = 129,479.26/x - Step 3: Cross multiply
316,467.76x = 474,700.56 × 129,479.26 - Step 4: Simplify right side
316,467.76x = 61,463,877,230.39 - Step 5: Solve for x
x = 61,463,877,230.39/316,467.76 - Step 6: Final answer
x = 194,218.45
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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.