Finding the Fourth Proportional to 312,913.51, 469,214.93 and 99,653.62
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Solution
The fourth proportional to 312,913.51, 469,214.93 and 99,653.62 is: 149,430.95
Step by Step Solution
- Step 1: Write the proportion equation
312,913.51 : 469,214.93 = 99,653.62 : x - Step 2: Convert to fraction form
312,913.51/469,214.93 = 99,653.62/x - Step 3: Cross multiply
312,913.51x = 469,214.93 × 99,653.62 - Step 4: Simplify right side
312,913.51x = 46,758,964,408.20 - Step 5: Solve for x
x = 46,758,964,408.20/312,913.51 - Step 6: Final answer
x = 149,430.95
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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.