Finding the Fourth Proportional to 316,107.65, 436,268.51 and 207,303.55
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Solution
The fourth proportional to 316,107.65, 436,268.51 and 207,303.55 is: 286,105.09
Step by Step Solution
- Step 1: Write the proportion equation
316,107.65 : 436,268.51 = 207,303.55 : x - Step 2: Convert to fraction form
316,107.65/436,268.51 = 207,303.55/x - Step 3: Cross multiply
316,107.65x = 436,268.51 × 207,303.55 - Step 4: Simplify right side
316,107.65x = 90,440,008,981.07 - Step 5: Solve for x
x = 90,440,008,981.07/316,107.65 - Step 6: Final answer
x = 286,105.09
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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.