Finding the Fourth Proportional to 355,615,854.95, 490,826,115.74 and 216,431,442.47
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Solution
The fourth proportional to 355,615,854.95, 490,826,115.74 and 216,431,442.47 is: 298,721,788.56
Step by Step Solution
- Step 1: Write the proportion equation
355,615,854.95 : 490,826,115.74 = 216,431,442.47 : x - Step 2: Convert to fraction form
355,615,854.95/490,826,115.74 = 216,431,442.47/x - Step 3: Cross multiply
355,615,854.95x = 490,826,115.74 × 216,431,442.47 - Step 4: Simplify right side
355,615,854.95x = 106,230,204,230,473,216 - Step 5: Solve for x
x = 106,230,204,230,473,216/355,615,854.95 - Step 6: Final answer
x = 298,721,788.56
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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.