Finding the Fourth Proportional to 421,385,283.58, 581,507,408.29 and 233,213,943.42
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Solution
The fourth proportional to 421,385,283.58, 581,507,408.29 and 233,213,943.42 is: 321,832,871.48
Step by Step Solution
- Step 1: Write the proportion equation
421,385,283.58 : 581,507,408.29 = 233,213,943.42 : x - Step 2: Convert to fraction form
421,385,283.58/581,507,408.29 = 233,213,943.42/x - Step 3: Cross multiply
421,385,283.58x = 581,507,408.29 × 233,213,943.42 - Step 4: Simplify right side
421,385,283.58x = 135,615,635,815,254,880 - Step 5: Solve for x
x = 135,615,635,815,254,880/421,385,283.58 - Step 6: Final answer
x = 321,832,871.48
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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.