Finding the Fourth Proportional to 381,313,972.02, 526,197,785.31 and 216,297,998.58
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Solution
The fourth proportional to 381,313,972.02, 526,197,785.31 and 216,297,998.58 is: 298,482,447.99
Step by Step Solution
- Step 1: Write the proportion equation
381,313,972.02 : 526,197,785.31 = 216,297,998.58 : x - Step 2: Convert to fraction form
381,313,972.02/526,197,785.31 = 216,297,998.58/x - Step 3: Cross multiply
381,313,972.02x = 526,197,785.31 × 216,297,998.58 - Step 4: Simplify right side
381,313,972.02x = 113,815,527,819,781,536 - Step 5: Solve for x
x = 113,815,527,819,781,536/381,313,972.02 - Step 6: Final answer
x = 298,482,447.99
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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.