Finding the Fourth Proportional to 257,471,118.40, 355,307,676.24 and 139,996,491.72
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Solution
The fourth proportional to 257,471,118.40, 355,307,676.24 and 139,996,491.72 is: 193,193,817.09
Step by Step Solution
- Step 1: Write the proportion equation
257,471,118.40 : 355,307,676.24 = 139,996,491.72 : x - Step 2: Convert to fraction form
257,471,118.40/355,307,676.24 = 139,996,491.72/x - Step 3: Cross multiply
257,471,118.40x = 355,307,676.24 × 139,996,491.72 - Step 4: Simplify right side
257,471,118.40x = 49,741,828,154,785,600 - Step 5: Solve for x
x = 49,741,828,154,785,600/257,471,118.40 - Step 6: Final answer
x = 193,193,817.09
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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.