Finding the Fourth Proportional to 280,422.08, 386,966.04 and 153,072.08
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Solution
The fourth proportional to 280,422.08, 386,966.04 and 153,072.08 is: 211,230.50
Step by Step Solution
- Step 1: Write the proportion equation
280,422.08 : 386,966.04 = 153,072.08 : x - Step 2: Convert to fraction form
280,422.08/386,966.04 = 153,072.08/x - Step 3: Cross multiply
280,422.08x = 386,966.04 × 153,072.08 - Step 4: Simplify right side
280,422.08x = 59,233,696,632.16 - Step 5: Solve for x
x = 59,233,696,632.16/280,422.08 - Step 6: Final answer
x = 211,230.50
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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.