Finding the Fourth Proportional to 391,463.28, 587,237.04 and 125,128.80
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Solution
The fourth proportional to 391,463.28, 587,237.04 and 125,128.80 is: 187,706.66
Step by Step Solution
- Step 1: Write the proportion equation
391,463.28 : 587,237.04 = 125,128.80 : x - Step 2: Convert to fraction form
391,463.28/587,237.04 = 125,128.80/x - Step 3: Cross multiply
391,463.28x = 587,237.04 × 125,128.80 - Step 4: Simplify right side
391,463.28x = 73,480,266,130.75 - Step 5: Solve for x
x = 73,480,266,130.75/391,463.28 - Step 6: Final answer
x = 187,706.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.