Finding the Fourth Proportional to 421,218.74, 581,281.02 and 239,930.60
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Solution
The fourth proportional to 421,218.74, 581,281.02 and 239,930.60 is: 331,103.75
Step by Step Solution
- Step 1: Write the proportion equation
421,218.74 : 581,281.02 = 239,930.60 : x - Step 2: Convert to fraction form
421,218.74/581,281.02 = 239,930.60/x - Step 3: Cross multiply
421,218.74x = 581,281.02 × 239,930.60 - Step 4: Simplify right side
421,218.74x = 139,467,103,897.21 - Step 5: Solve for x
x = 139,467,103,897.21/421,218.74 - Step 6: Final answer
x = 331,103.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.