Finding the Fourth Proportional to 278,971.08, 384,990.36 and 151,656.12
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Solution
The fourth proportional to 278,971.08, 384,990.36 and 151,656.12 is: 209,291.03
Step by Step Solution
- Step 1: Write the proportion equation
278,971.08 : 384,990.36 = 151,656.12 : x - Step 2: Convert to fraction form
278,971.08/384,990.36 = 151,656.12/x - Step 3: Cross multiply
278,971.08x = 384,990.36 × 151,656.12 - Step 4: Simplify right side
278,971.08x = 58,386,144,235.00 - Step 5: Solve for x
x = 58,386,144,235.00/278,971.08 - Step 6: Final answer
x = 209,291.03
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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.