Finding the Fourth Proportional to 221,508,591.12, 305,688,023.28 and 122,395,758.48
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Solution
The fourth proportional to 221,508,591.12, 305,688,023.28 and 122,395,758.48 is: 168,909,554.61
Step by Step Solution
- Step 1: Write the proportion equation
221,508,591.12 : 305,688,023.28 = 122,395,758.48 : x - Step 2: Convert to fraction form
221,508,591.12/305,688,023.28 = 122,395,758.48/x - Step 3: Cross multiply
221,508,591.12x = 305,688,023.28 × 122,395,758.48 - Step 4: Simplify right side
221,508,591.12x = 37,414,917,467,607,496 - Step 5: Solve for x
x = 37,414,917,467,607,496/221,508,591.12 - Step 6: Final answer
x = 168,909,554.61
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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.