Finding the Fourth Proportional to 238,309.17, 328,866.99 and 129,413.55
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Solution
The fourth proportional to 238,309.17, 328,866.99 and 129,413.55 is: 178,590.88
Step by Step Solution
- Step 1: Write the proportion equation
238,309.17 : 328,866.99 = 129,413.55 : x - Step 2: Convert to fraction form
238,309.17/328,866.99 = 129,413.55/x - Step 3: Cross multiply
238,309.17x = 328,866.99 × 129,413.55 - Step 4: Simplify right side
238,309.17x = 42,559,842,929.14 - Step 5: Solve for x
x = 42,559,842,929.14/238,309.17 - Step 6: Final answer
x = 178,590.88
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1.5x scale
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.