Finding the Fourth Proportional to 253,285.08, 349,536.20 and 138,561.28
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Solution
The fourth proportional to 253,285.08, 349,536.20 and 138,561.28 is: 191,216.09
Step by Step Solution
- Step 1: Write the proportion equation
253,285.08 : 349,536.20 = 138,561.28 : x - Step 2: Convert to fraction form
253,285.08/349,536.20 = 138,561.28/x - Step 3: Cross multiply
253,285.08x = 349,536.20 × 138,561.28 - Step 4: Simplify right side
253,285.08x = 48,432,183,278.34 - Step 5: Solve for x
x = 48,432,183,278.34/253,285.08 - Step 6: Final answer
x = 191,216.09
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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.