Finding the Fourth Proportional to 309,963.43, 427,763.74 and 172,142.99
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Solution
The fourth proportional to 309,963.43, 427,763.74 and 172,142.99 is: 237,565.21
Step by Step Solution
- Step 1: Write the proportion equation
309,963.43 : 427,763.74 = 172,142.99 : x - Step 2: Convert to fraction form
309,963.43/427,763.74 = 172,142.99/x - Step 3: Cross multiply
309,963.43x = 427,763.74 × 172,142.99 - Step 4: Simplify right side
309,963.43x = 73,636,526,648.01 - Step 5: Solve for x
x = 73,636,526,648.01/309,963.43 - Step 6: Final answer
x = 237,565.21
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.