Finding the Fourth Proportional to 280,421.08, 386,964.66 and 153,071.08
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Solution
The fourth proportional to 280,421.08, 386,964.66 and 153,071.08 is: 211,229.12
Step by Step Solution
- Step 1: Write the proportion equation
280,421.08 : 386,964.66 = 153,071.08 : x - Step 2: Convert to fraction form
280,421.08/386,964.66 = 153,071.08/x - Step 3: Cross multiply
280,421.08x = 386,964.66 × 153,071.08 - Step 4: Simplify right side
280,421.08x = 59,233,098,428.03 - Step 5: Solve for x
x = 59,233,098,428.03/280,421.08 - Step 6: Final answer
x = 211,229.12
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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.