Finding the Fourth Proportional to 230,854.06, 318,594.69 and 128,899.57
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Solution
The fourth proportional to 230,854.06, 318,594.69 and 128,899.57 is: 177,890.39
Step by Step Solution
- Step 1: Write the proportion equation
230,854.06 : 318,594.69 = 128,899.57 : x - Step 2: Convert to fraction form
230,854.06/318,594.69 = 128,899.57/x - Step 3: Cross multiply
230,854.06x = 318,594.69 × 128,899.57 - Step 4: Simplify right side
230,854.06x = 41,066,718,545.28 - Step 5: Solve for x
x = 41,066,718,545.28/230,854.06 - Step 6: Final answer
x = 177,890.39
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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.