Finding the Fourth Proportional to 326,396.34, 489,257.70 and 136,966.74
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Solution
The fourth proportional to 326,396.34, 489,257.70 and 136,966.74 is: 205,308.77
Step by Step Solution
- Step 1: Write the proportion equation
326,396.34 : 489,257.70 = 136,966.74 : x - Step 2: Convert to fraction form
326,396.34/489,257.70 = 136,966.74/x - Step 3: Cross multiply
326,396.34x = 489,257.70 × 136,966.74 - Step 4: Simplify right side
326,396.34x = 67,012,032,188.90 - Step 5: Solve for x
x = 67,012,032,188.90/326,396.34 - Step 6: Final answer
x = 205,308.77
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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.