Finding the Fourth Proportional to 328,728.84, 453,701.34 and 190,886.28
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Solution
The fourth proportional to 328,728.84, 453,701.34 and 190,886.28 is: 263,455.32
Step by Step Solution
- Step 1: Write the proportion equation
328,728.84 : 453,701.34 = 190,886.28 : x - Step 2: Convert to fraction form
328,728.84/453,701.34 = 190,886.28/x - Step 3: Cross multiply
328,728.84x = 453,701.34 × 190,886.28 - Step 4: Simplify right side
328,728.84x = 86,605,361,023.62 - Step 5: Solve for x
x = 86,605,361,023.62/328,728.84 - Step 6: Final answer
x = 263,455.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.