Finding the Fourth Proportional to 421,035.42, 631,595.64 and 136,714.08
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Solution
The fourth proportional to 421,035.42, 631,595.64 and 136,714.08 is: 205,084.92
Step by Step Solution
- Step 1: Write the proportion equation
421,035.42 : 631,595.64 = 136,714.08 : x - Step 2: Convert to fraction form
421,035.42/631,595.64 = 136,714.08/x - Step 3: Cross multiply
421,035.42x = 631,595.64 × 136,714.08 - Step 4: Simplify right side
421,035.42x = 86,348,016,854.61 - Step 5: Solve for x
x = 86,348,016,854.61/421,035.42 - Step 6: Final answer
x = 205,084.92
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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.