Finding the Fourth Proportional to 346,982,729.55, 478,833,332.67 and 188,212,455.06
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Solution
The fourth proportional to 346,982,729.55, 478,833,332.67 and 188,212,455.06 is: 259,731,650.69
Step by Step Solution
- Step 1: Write the proportion equation
346,982,729.55 : 478,833,332.67 = 188,212,455.06 : x - Step 2: Convert to fraction form
346,982,729.55/478,833,332.67 = 188,212,455.06/x - Step 3: Cross multiply
346,982,729.55x = 478,833,332.67 × 188,212,455.06 - Step 4: Simplify right side
346,982,729.55x = 90,122,397,106,638,432 - Step 5: Solve for x
x = 90,122,397,106,638,432/346,982,729.55 - Step 6: Final answer
x = 259,731,650.69
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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.