Finding the Fourth Proportional to 289,317.06, 399,239.93 and 160,247.88
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Solution
The fourth proportional to 289,317.06, 399,239.93 and 160,247.88 is: 221,132.32
Step by Step Solution
- Step 1: Write the proportion equation
289,317.06 : 399,239.93 = 160,247.88 : x - Step 2: Convert to fraction form
289,317.06/399,239.93 = 160,247.88/x - Step 3: Cross multiply
289,317.06x = 399,239.93 × 160,247.88 - Step 4: Simplify right side
289,317.06x = 63,977,353,391.95 - Step 5: Solve for x
x = 63,977,353,391.95/289,317.06 - Step 6: Final answer
x = 221,132.32
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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.