Finding the Fourth Proportional to 278,291,081.60, 417,487,939.56 and 91,555,533.28
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Solution
The fourth proportional to 278,291,081.60, 417,487,939.56 and 91,555,533.28 is: 137,350,182.85
Step by Step Solution
- Step 1: Write the proportion equation
278,291,081.60 : 417,487,939.56 = 91,555,533.28 : x - Step 2: Convert to fraction form
278,291,081.60/417,487,939.56 = 91,555,533.28/x - Step 3: Cross multiply
278,291,081.60x = 417,487,939.56 × 91,555,533.28 - Step 4: Simplify right side
278,291,081.60x = 38,223,330,944,384,208 - Step 5: Solve for x
x = 38,223,330,944,384,208/278,291,081.60 - Step 6: Final answer
x = 137,350,182.85
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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.