Finding the Fourth Proportional to 257,975.13, 355,993.70 and 143,261.05
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Solution
The fourth proportional to 257,975.13, 355,993.70 and 143,261.05 is: 197,693.59
Step by Step Solution
- Step 1: Write the proportion equation
257,975.13 : 355,993.70 = 143,261.05 : x - Step 2: Convert to fraction form
257,975.13/355,993.70 = 143,261.05/x - Step 3: Cross multiply
257,975.13x = 355,993.70 × 143,261.05 - Step 4: Simplify right side
257,975.13x = 51,000,028,759.11 - Step 5: Solve for x
x = 51,000,028,759.11/257,975.13 - Step 6: Final answer
x = 197,693.59
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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.