Finding the Fourth Proportional to 287,775.04, 397,129.80 and 160,448.08
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Solution
The fourth proportional to 287,775.04, 397,129.80 and 160,448.08 is: 221,418.49
Step by Step Solution
- Step 1: Write the proportion equation
287,775.04 : 397,129.80 = 160,448.08 : x - Step 2: Convert to fraction form
287,775.04/397,129.80 = 160,448.08/x - Step 3: Cross multiply
287,775.04x = 397,129.80 × 160,448.08 - Step 4: Simplify right side
287,775.04x = 63,718,713,920.78 - Step 5: Solve for x
x = 63,718,713,920.78/287,775.04 - Step 6: Final answer
x = 221,418.49
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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.