Finding the Fourth Proportional to 368,956,121.99, 509,159,560.10 and 201,693,115.40
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Solution
The fourth proportional to 368,956,121.99, 509,159,560.10 and 201,693,115.40 is: 278,336,560.34
Step by Step Solution
- Step 1: Write the proportion equation
368,956,121.99 : 509,159,560.10 = 201,693,115.40 : x - Step 2: Convert to fraction form
368,956,121.99/509,159,560.10 = 201,693,115.40/x - Step 3: Cross multiply
368,956,121.99x = 509,159,560.10 × 201,693,115.40 - Step 4: Simplify right side
368,956,121.99x = 102,693,977,908,708,288 - Step 5: Solve for x
x = 102,693,977,908,708,288/368,956,121.99 - Step 6: Final answer
x = 278,336,560.34
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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.