Finding the Fourth Proportional to 391,904.10, 587,710.35 and 155,197.80
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Solution
The fourth proportional to 391,904.10, 587,710.35 and 155,197.80 is: 232,738.96
Step by Step Solution
- Step 1: Write the proportion equation
391,904.10 : 587,710.35 = 155,197.80 : x - Step 2: Convert to fraction form
391,904.10/587,710.35 = 155,197.80/x - Step 3: Cross multiply
391,904.10x = 587,710.35 × 155,197.80 - Step 4: Simplify right side
391,904.10x = 91,211,353,357.23 - Step 5: Solve for x
x = 91,211,353,357.23/391,904.10 - Step 6: Final answer
x = 232,738.96
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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.