Finding the Fourth Proportional to 288,515.36, 432,718.68 and 78,125.60
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Solution
The fourth proportional to 288,515.36, 432,718.68 and 78,125.60 is: 117,173.68
Step by Step Solution
- Step 1: Write the proportion equation
288,515.36 : 432,718.68 = 78,125.60 : x - Step 2: Convert to fraction form
288,515.36/432,718.68 = 78,125.60/x - Step 3: Cross multiply
288,515.36x = 432,718.68 × 78,125.60 - Step 4: Simplify right side
288,515.36x = 33,806,406,506.21 - Step 5: Solve for x
x = 33,806,406,506.21/288,515.36 - Step 6: Final answer
x = 117,173.68
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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.