Finding the Fourth Proportional to 316,639.33, 474,959.95 and 76,752.28
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Solution
The fourth proportional to 316,639.33, 474,959.95 and 76,752.28 is: 115,128.65
Step by Step Solution
- Step 1: Write the proportion equation
316,639.33 : 474,959.95 = 76,752.28 : x - Step 2: Convert to fraction form
316,639.33/474,959.95 = 76,752.28/x - Step 3: Cross multiply
316,639.33x = 474,959.95 × 76,752.28 - Step 4: Simplify right side
316,639.33x = 36,454,257,233.09 - Step 5: Solve for x
x = 36,454,257,233.09/316,639.33 - Step 6: Final answer
x = 115,128.65
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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.