Finding the Fourth Proportional to 326,283.19, 489,368.35 and 86,400.54
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Solution
The fourth proportional to 326,283.19, 489,368.35 and 86,400.54 is: 129,585.87
Step by Step Solution
- Step 1: Write the proportion equation
326,283.19 : 489,368.35 = 86,400.54 : x - Step 2: Convert to fraction form
326,283.19/489,368.35 = 86,400.54/x - Step 3: Cross multiply
326,283.19x = 489,368.35 × 86,400.54 - Step 4: Simplify right side
326,283.19x = 42,281,689,806.91 - Step 5: Solve for x
x = 42,281,689,806.91/326,283.19 - Step 6: Final answer
x = 129,585.87
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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.