Finding the Fourth Proportional to 258,536.13, 387,804.32 and 81,056.99
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Solution
The fourth proportional to 258,536.13, 387,804.32 and 81,056.99 is: 121,585.52
Step by Step Solution
- Step 1: Write the proportion equation
258,536.13 : 387,804.32 = 81,056.99 : x - Step 2: Convert to fraction form
258,536.13/387,804.32 = 81,056.99/x - Step 3: Cross multiply
258,536.13x = 387,804.32 × 81,056.99 - Step 4: Simplify right side
258,536.13x = 31,434,248,543.89 - Step 5: Solve for x
x = 31,434,248,543.89/258,536.13 - Step 6: Final answer
x = 121,585.52
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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.