Finding the Fourth Proportional to 257,407.12, 385,585.08 and 132,485.68
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Solution
The fourth proportional to 257,407.12, 385,585.08 and 132,485.68 is: 198,458.00
Step by Step Solution
- Step 1: Write the proportion equation
257,407.12 : 385,585.08 = 132,485.68 : x - Step 2: Convert to fraction form
257,407.12/385,585.08 = 132,485.68/x - Step 3: Cross multiply
257,407.12x = 385,585.08 × 132,485.68 - Step 4: Simplify right side
257,407.12x = 51,084,501,521.65 - Step 5: Solve for x
x = 51,084,501,521.65/257,407.12 - Step 6: Final answer
x = 198,458.00
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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.