Finding the Fourth Proportional to 256,961,138.74, 354,606,821.39 and 139,486,548.76
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Solution
The fourth proportional to 256,961,138.74, 354,606,821.39 and 139,486,548.76 is: 192,491,681.52
Step by Step Solution
- Step 1: Write the proportion equation
256,961,138.74 : 354,606,821.39 = 139,486,548.76 : x - Step 2: Convert to fraction form
256,961,138.74/354,606,821.39 = 139,486,548.76/x - Step 3: Cross multiply
256,961,138.74x = 354,606,821.39 × 139,486,548.76 - Step 4: Simplify right side
256,961,138.74x = 49,462,881,682,444,840 - Step 5: Solve for x
x = 49,462,881,682,444,840/256,961,138.74 - Step 6: Final answer
x = 192,491,681.52
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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.