Finding the Fourth Proportional to 211,574.05, 291,972.17 and 120,931.97
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Solution
The fourth proportional to 211,574.05, 291,972.17 and 120,931.97 is: 166,886.10
Step by Step Solution
- Step 1: Write the proportion equation
211,574.05 : 291,972.17 = 120,931.97 : x - Step 2: Convert to fraction form
211,574.05/291,972.17 = 120,931.97/x - Step 3: Cross multiply
211,574.05x = 291,972.17 × 120,931.97 - Step 4: Simplify right side
211,574.05x = 35,308,768,545.74 - Step 5: Solve for x
x = 35,308,768,545.74/211,574.05 - Step 6: Final answer
x = 166,886.10
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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.