Finding the Fourth Proportional to 281,292.12, 388,106.35 and 160,389.31
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Solution
The fourth proportional to 281,292.12, 388,106.35 and 160,389.31 is: 221,293.47
Step by Step Solution
- Step 1: Write the proportion equation
281,292.12 : 388,106.35 = 160,389.31 : x - Step 2: Convert to fraction form
281,292.12/388,106.35 = 160,389.31/x - Step 3: Cross multiply
281,292.12x = 388,106.35 × 160,389.31 - Step 4: Simplify right side
281,292.12x = 62,248,109,683.12 - Step 5: Solve for x
x = 62,248,109,683.12/281,292.12 - Step 6: Final answer
x = 221,293.47
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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.