Finding the Fourth Proportional to 385,413.12, 578,136.96 and 169,257.60
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Solution
The fourth proportional to 385,413.12, 578,136.96 and 169,257.60 is: 253,893.99
Step by Step Solution
- Step 1: Write the proportion equation
385,413.12 : 578,136.96 = 169,257.60 : x - Step 2: Convert to fraction form
385,413.12/578,136.96 = 169,257.60/x - Step 3: Cross multiply
385,413.12x = 578,136.96 × 169,257.60 - Step 4: Simplify right side
385,413.12x = 97,854,074,320.90 - Step 5: Solve for x
x = 97,854,074,320.90/385,413.12 - Step 6: Final answer
x = 253,893.99
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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.