Finding the Fourth Proportional to 211,398.03, 291,742.79 and 139,652.28
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Solution
The fourth proportional to 211,398.03, 291,742.79 and 139,652.28 is: 192,729.07
Step by Step Solution
- Step 1: Write the proportion equation
211,398.03 : 291,742.79 = 139,652.28 : x - Step 2: Convert to fraction form
211,398.03/291,742.79 = 139,652.28/x - Step 3: Cross multiply
211,398.03x = 291,742.79 × 139,652.28 - Step 4: Simplify right side
211,398.03x = 40,742,545,797.06 - Step 5: Solve for x
x = 40,742,545,797.06/211,398.03 - Step 6: Final answer
x = 192,729.07
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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.