Finding the Fourth Proportional to 172,436,407.80, 258,654,611.70 and 155,430,295.80
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Solution
The fourth proportional to 172,436,407.80, 258,654,611.70 and 155,430,295.80 is: 233,145,443.70
Step by Step Solution
- Step 1: Write the proportion equation
172,436,407.80 : 258,654,611.70 = 155,430,295.80 : x - Step 2: Convert to fraction form
172,436,407.80/258,654,611.70 = 155,430,295.80/x - Step 3: Cross multiply
172,436,407.80x = 258,654,611.70 × 155,430,295.80 - Step 4: Simplify right side
172,436,407.80x = 40,202,762,806,565,144 - Step 5: Solve for x
x = 40,202,762,806,565,144/172,436,407.80 - Step 6: Final answer
x = 233,145,443.70
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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.