Finding the Fourth Proportional to 390,203.42, 585,305.38 and 109,720.68
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Solution
The fourth proportional to 390,203.42, 585,305.38 and 109,720.68 is: 164,581.09
Step by Step Solution
- Step 1: Write the proportion equation
390,203.42 : 585,305.38 = 109,720.68 : x - Step 2: Convert to fraction form
390,203.42/585,305.38 = 109,720.68/x - Step 3: Cross multiply
390,203.42x = 585,305.38 × 109,720.68 - Step 4: Simplify right side
390,203.42x = 64,220,104,301.26 - Step 5: Solve for x
x = 64,220,104,301.26/390,203.42 - Step 6: Final answer
x = 164,581.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.