Finding the Fourth Proportional to 230,406.90, 317,922.99 and 128,410.02
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Solution
The fourth proportional to 230,406.90, 317,922.99 and 128,410.02 is: 177,184.35
Step by Step Solution
- Step 1: Write the proportion equation
230,406.90 : 317,922.99 = 128,410.02 : x - Step 2: Convert to fraction form
230,406.90/317,922.99 = 128,410.02/x - Step 3: Cross multiply
230,406.90x = 317,922.99 × 128,410.02 - Step 4: Simplify right side
230,406.90x = 40,824,497,504.36 - Step 5: Solve for x
x = 40,824,497,504.36/230,406.90 - Step 6: Final answer
x = 177,184.35
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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.