Finding the Fourth Proportional to 276,784.83, 415,177.65 and 77,105.79
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Solution
The fourth proportional to 276,784.83, 415,177.65 and 77,105.79 is: 115,658.80
Step by Step Solution
- Step 1: Write the proportion equation
276,784.83 : 415,177.65 = 77,105.79 : x - Step 2: Convert to fraction form
276,784.83/415,177.65 = 77,105.79/x - Step 3: Cross multiply
276,784.83x = 415,177.65 × 77,105.79 - Step 4: Simplify right side
276,784.83x = 32,012,600,693.59 - Step 5: Solve for x
x = 32,012,600,693.59/276,784.83 - Step 6: Final answer
x = 115,658.80
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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.