Finding the Fourth Proportional to 221,471.12, 305,619.36 and 124,669.28
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Solution
The fourth proportional to 221,471.12, 305,619.36 and 124,669.28 is: 172,037.54
Step by Step Solution
- Step 1: Write the proportion equation
221,471.12 : 305,619.36 = 124,669.28 : x - Step 2: Convert to fraction form
221,471.12/305,619.36 = 124,669.28/x - Step 3: Cross multiply
221,471.12x = 305,619.36 × 124,669.28 - Step 4: Simplify right side
221,471.12x = 38,101,345,565.26 - Step 5: Solve for x
x = 38,101,345,565.26/221,471.12 - Step 6: Final answer
x = 172,037.54
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.