Finding the Fourth Proportional to 257,410,579.80, 386,115,869.70 and 136,478,227.80
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Solution
The fourth proportional to 257,410,579.80, 386,115,869.70 and 136,478,227.80 is: 204,717,341.70
Step by Step Solution
- Step 1: Write the proportion equation
257,410,579.80 : 386,115,869.70 = 136,478,227.80 : x - Step 2: Convert to fraction form
257,410,579.80/386,115,869.70 = 136,478,227.80/x - Step 3: Cross multiply
257,410,579.80x = 386,115,869.70 × 136,478,227.80 - Step 4: Simplify right side
257,410,579.80x = 52,696,409,622,111,720 - Step 5: Solve for x
x = 52,696,409,622,111,720/257,410,579.80 - Step 6: Final answer
x = 204,717,341.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.