Finding the Fourth Proportional to 428,218.84, 642,125.58 and 158,258.44
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Solution
The fourth proportional to 428,218.84, 642,125.58 and 158,258.44 is: 237,312.75
Step by Step Solution
- Step 1: Write the proportion equation
428,218.84 : 642,125.58 = 158,258.44 : x - Step 2: Convert to fraction form
428,218.84/642,125.58 = 158,258.44/x - Step 3: Cross multiply
428,218.84x = 642,125.58 × 158,258.44 - Step 4: Simplify right side
428,218.84x = 101,621,792,574.90 - Step 5: Solve for x
x = 101,621,792,574.90/428,218.84 - Step 6: Final answer
x = 237,312.75
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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.