Finding the Fourth Proportional to 316,343.99, 474,515.99 and 138,852.54
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Solution
The fourth proportional to 316,343.99, 474,515.99 and 138,852.54 is: 208,278.81
Step by Step Solution
- Step 1: Write the proportion equation
316,343.99 : 474,515.99 = 138,852.54 : x - Step 2: Convert to fraction form
316,343.99/474,515.99 = 138,852.54/x - Step 3: Cross multiply
316,343.99x = 474,515.99 × 138,852.54 - Step 4: Simplify right side
316,343.99x = 65,887,750,482.11 - Step 5: Solve for x
x = 65,887,750,482.11/316,343.99 - Step 6: Final answer
x = 208,278.81
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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.