Finding the Fourth Proportional to 403,521.12, 556,837.74 and 231,430.14
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Solution
The fourth proportional to 403,521.12, 556,837.74 and 231,430.14 is: 319,361.32
Step by Step Solution
- Step 1: Write the proportion equation
403,521.12 : 556,837.74 = 231,430.14 : x - Step 2: Convert to fraction form
403,521.12/556,837.74 = 231,430.14/x - Step 3: Cross multiply
403,521.12x = 556,837.74 × 231,430.14 - Step 4: Simplify right side
403,521.12x = 128,869,036,125.48 - Step 5: Solve for x
x = 128,869,036,125.48/403,521.12 - Step 6: Final answer
x = 319,361.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.