Finding the Fourth Proportional to 316,361.99, 436,565.54 and 173,128.07
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Solution
The fourth proportional to 316,361.99, 436,565.54 and 173,128.07 is: 238,909.07
Step by Step Solution
- Step 1: Write the proportion equation
316,361.99 : 436,565.54 = 173,128.07 : x - Step 2: Convert to fraction form
316,361.99/436,565.54 = 173,128.07/x - Step 3: Cross multiply
316,361.99x = 436,565.54 × 173,128.07 - Step 4: Simplify right side
316,361.99x = 75,581,746,320.24 - Step 5: Solve for x
x = 75,581,746,320.24/316,361.99 - Step 6: Final answer
x = 238,909.07
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1.5x scale
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.