Finding the Fourth Proportional to 278,502.88, 417,762.42 and 68,140.76
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Solution
The fourth proportional to 278,502.88, 417,762.42 and 68,140.76 is: 102,213.12
Step by Step Solution
- Step 1: Write the proportion equation
278,502.88 : 417,762.42 = 68,140.76 : x - Step 2: Convert to fraction form
278,502.88/417,762.42 = 68,140.76/x - Step 3: Cross multiply
278,502.88x = 417,762.42 × 68,140.76 - Step 4: Simplify right side
278,502.88x = 28,466,648,798.24 - Step 5: Solve for x
x = 28,466,648,798.24/278,502.88 - Step 6: Final answer
x = 102,213.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.