Finding the Fourth Proportional to 257,211.69, 354,973.94 and 142,526.31
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Solution
The fourth proportional to 257,211.69, 354,973.94 and 142,526.31 is: 196,698.39
Step by Step Solution
- Step 1: Write the proportion equation
257,211.69 : 354,973.94 = 142,526.31 : x - Step 2: Convert to fraction form
257,211.69/354,973.94 = 142,526.31/x - Step 3: Cross multiply
257,211.69x = 354,973.94 × 142,526.31 - Step 4: Simplify right side
257,211.69x = 50,593,124,305.05 - Step 5: Solve for x
x = 50,593,124,305.05/257,211.69 - Step 6: Final answer
x = 196,698.39
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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.