Finding the Fourth Proportional to 421,438.42, 581,603.34 and 237,738.70
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Solution
The fourth proportional to 421,438.42, 581,603.34 and 237,738.70 is: 328,089.74
Step by Step Solution
- Step 1: Write the proportion equation
421,438.42 : 581,603.34 = 237,738.70 : x - Step 2: Convert to fraction form
421,438.42/581,603.34 = 237,738.70/x - Step 3: Cross multiply
421,438.42x = 581,603.34 × 237,738.70 - Step 4: Simplify right side
421,438.42x = 138,269,621,967.26 - Step 5: Solve for x
x = 138,269,621,967.26/421,438.42 - Step 6: Final answer
x = 328,089.74
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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.