Finding the Fourth Proportional to 391,128.84, 586,688.31 and 124,885.98
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Solution
The fourth proportional to 391,128.84, 586,688.31 and 124,885.98 is: 187,327.39
Step by Step Solution
- Step 1: Write the proportion equation
391,128.84 : 586,688.31 = 124,885.98 : x - Step 2: Convert to fraction form
391,128.84/586,688.31 = 124,885.98/x - Step 3: Cross multiply
391,128.84x = 586,688.31 × 124,885.98 - Step 4: Simplify right side
391,128.84x = 73,269,144,548.89 - Step 5: Solve for x
x = 73,269,144,548.89/391,128.84 - Step 6: Final answer
x = 187,327.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.