Finding the Fourth Proportional to 421,386.24, 632,079.36 and 168,781.44
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Solution
The fourth proportional to 421,386.24, 632,079.36 and 168,781.44 is: 253,172.16
Step by Step Solution
- Step 1: Write the proportion equation
421,386.24 : 632,079.36 = 168,781.44 : x - Step 2: Convert to fraction form
421,386.24/632,079.36 = 168,781.44/x - Step 3: Cross multiply
421,386.24x = 632,079.36 × 168,781.44 - Step 4: Simplify right side
421,386.24x = 106,683,264,575.08 - Step 5: Solve for x
x = 106,683,264,575.08/421,386.24 - Step 6: Final answer
x = 253,172.16
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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.