Finding the Fourth Proportional to 307,639.65, 429,645.75 and 307,639.65
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Solution
The fourth proportional to 307,639.65, 429,645.75 and 307,639.65 is: 429,645.75
Step by Step Solution
- Step 1: Write the proportion equation
307,639.65 : 429,645.75 = 307,639.65 : x - Step 2: Convert to fraction form
307,639.65/429,645.75 = 307,639.65/x - Step 3: Cross multiply
307,639.65x = 429,645.75 × 307,639.65 - Step 4: Simplify right side
307,639.65x = 132,176,068,153.99 - Step 5: Solve for x
x = 132,176,068,153.99/307,639.65 - Step 6: Final answer
x = 429,645.75
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.