Finding the Fourth Proportional to 207,931.80, 286,990.35 and 131,402.19
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Solution
The fourth proportional to 207,931.80, 286,990.35 and 131,402.19 is: 181,363.12
Step by Step Solution
- Step 1: Write the proportion equation
207,931.80 : 286,990.35 = 131,402.19 : x - Step 2: Convert to fraction form
207,931.80/286,990.35 = 131,402.19/x - Step 3: Cross multiply
207,931.80x = 286,990.35 × 131,402.19 - Step 4: Simplify right side
207,931.80x = 37,711,160,498.87 - Step 5: Solve for x
x = 37,711,160,498.87/207,931.80 - Step 6: Final answer
x = 181,363.12
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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.