Finding the Fourth Proportional to 320,432.58, 480,676.14 and 83,774.88
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Solution
The fourth proportional to 320,432.58, 480,676.14 and 83,774.88 is: 125,669.45
Step by Step Solution
- Step 1: Write the proportion equation
320,432.58 : 480,676.14 = 83,774.88 : x - Step 2: Convert to fraction form
320,432.58/480,676.14 = 83,774.88/x - Step 3: Cross multiply
320,432.58x = 480,676.14 × 83,774.88 - Step 4: Simplify right side
320,432.58x = 40,268,585,947.36 - Step 5: Solve for x
x = 40,268,585,947.36/320,432.58 - Step 6: Final answer
x = 125,669.45
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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.