Finding the Fourth Proportional to 421,426.70, 581,521.11 and 249,349.94
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Solution
The fourth proportional to 421,426.70, 581,521.11 and 249,349.94 is: 344,074.67
Step by Step Solution
- Step 1: Write the proportion equation
421,426.70 : 581,521.11 = 249,349.94 : x - Step 2: Convert to fraction form
421,426.70/581,521.11 = 249,349.94/x - Step 3: Cross multiply
421,426.70x = 581,521.11 × 249,349.94 - Step 4: Simplify right side
421,426.70x = 145,002,253,887.23 - Step 5: Solve for x
x = 145,002,253,887.23/421,426.70 - Step 6: Final answer
x = 344,074.67
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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.