Finding the Fourth Proportional to 421,152.56, 630,813.62 and 261,267.68
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Solution
The fourth proportional to 421,152.56, 630,813.62 and 261,267.68 is: 391,333.75
Step by Step Solution
- Step 1: Write the proportion equation
421,152.56 : 630,813.62 = 261,267.68 : x - Step 2: Convert to fraction form
421,152.56/630,813.62 = 261,267.68/x - Step 3: Cross multiply
421,152.56x = 630,813.62 × 261,267.68 - Step 4: Simplify right side
421,152.56x = 164,811,211,009.80 - Step 5: Solve for x
x = 164,811,211,009.80/421,152.56 - Step 6: Final answer
x = 391,333.75
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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.