Finding the Fourth Proportional to 256,130,677.82, 353,460,260.90 and 138,655,921.79
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Solution
The fourth proportional to 256,130,677.82, 353,460,260.90 and 138,655,921.79 is: 191,345,131.75
Step by Step Solution
- Step 1: Write the proportion equation
256,130,677.82 : 353,460,260.90 = 138,655,921.79 : x - Step 2: Convert to fraction form
256,130,677.82/353,460,260.90 = 138,655,921.79/x - Step 3: Cross multiply
256,130,677.82x = 353,460,260.90 × 138,655,921.79 - Step 4: Simplify right side
256,130,677.82x = 49,009,358,292,453,680 - Step 5: Solve for x
x = 49,009,358,292,453,680/256,130,677.82 - Step 6: Final answer
x = 191,345,131.75
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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.