Finding the Fourth Proportional to 312,309.84, 430,987.71 and 169,069.88
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Solution
The fourth proportional to 312,309.84, 430,987.71 and 169,069.88 is: 233,316.50
Step by Step Solution
- Step 1: Write the proportion equation
312,309.84 : 430,987.71 = 169,069.88 : x - Step 2: Convert to fraction form
312,309.84/430,987.71 = 169,069.88/x - Step 3: Cross multiply
312,309.84x = 430,987.71 × 169,069.88 - Step 4: Simplify right side
312,309.84x = 72,867,038,256.24 - Step 5: Solve for x
x = 72,867,038,256.24/312,309.84 - Step 6: Final answer
x = 233,316.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.