Finding the Fourth Proportional to 390,114.51, 585,317.57 and 153,622.05
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Solution
The fourth proportional to 390,114.51, 585,317.57 and 153,622.05 is: 230,490.49
Step by Step Solution
- Step 1: Write the proportion equation
390,114.51 : 585,317.57 = 153,622.05 : x - Step 2: Convert to fraction form
390,114.51/585,317.57 = 153,622.05/x - Step 3: Cross multiply
390,114.51x = 585,317.57 × 153,622.05 - Step 4: Simplify right side
390,114.51x = 89,917,686,467.71 - Step 5: Solve for x
x = 89,917,686,467.71/390,114.51 - Step 6: Final answer
x = 230,490.49
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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.