Finding the Fourth Proportional to 318,413.12, 439,412.95 and 173,222.06
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Solution
The fourth proportional to 318,413.12, 439,412.95 and 173,222.06 is: 239,047.99
Step by Step Solution
- Step 1: Write the proportion equation
318,413.12 : 439,412.95 = 173,222.06 : x - Step 2: Convert to fraction form
318,413.12/439,412.95 = 173,222.06/x - Step 3: Cross multiply
318,413.12x = 439,412.95 × 173,222.06 - Step 4: Simplify right side
318,413.12x = 76,116,016,389.68 - Step 5: Solve for x
x = 76,116,016,389.68/318,413.12 - Step 6: Final answer
x = 239,047.99
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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.