Finding the Fourth Proportional to 207,840.09, 286,819.20 and 112,346.79
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Solution
The fourth proportional to 207,840.09, 286,819.20 and 112,346.79 is: 155,038.50
Step by Step Solution
- Step 1: Write the proportion equation
207,840.09 : 286,819.20 = 112,346.79 : x - Step 2: Convert to fraction form
207,840.09/286,819.20 = 112,346.79/x - Step 3: Cross multiply
207,840.09x = 286,819.20 × 112,346.79 - Step 4: Simplify right side
207,840.09x = 32,223,216,430.37 - Step 5: Solve for x
x = 32,223,216,430.37/207,840.09 - Step 6: Final answer
x = 155,038.50
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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.