Finding the Fourth Proportional to 215,155.32, 322,437.74 and 136,128.08
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Solution
The fourth proportional to 215,155.32, 322,437.74 and 136,128.08 is: 204,005.31
Step by Step Solution
- Step 1: Write the proportion equation
215,155.32 : 322,437.74 = 136,128.08 : x - Step 2: Convert to fraction form
215,155.32/322,437.74 = 136,128.08/x - Step 3: Cross multiply
215,155.32x = 322,437.74 × 136,128.08 - Step 4: Simplify right side
215,155.32x = 43,892,828,777.48 - Step 5: Solve for x
x = 43,892,828,777.48/215,155.32 - Step 6: Final answer
x = 204,005.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.