Finding the Fourth Proportional to 390,161.14, 585,297.45 and 120,312.07
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Solution
The fourth proportional to 390,161.14, 585,297.45 and 120,312.07 is: 180,485.29
Step by Step Solution
- Step 1: Write the proportion equation
390,161.14 : 585,297.45 = 120,312.07 : x - Step 2: Convert to fraction form
390,161.14/585,297.45 = 120,312.07/x - Step 3: Cross multiply
390,161.14x = 585,297.45 × 120,312.07 - Step 4: Simplify right side
390,161.14x = 70,418,346,311.98 - Step 5: Solve for x
x = 70,418,346,311.98/390,161.14 - Step 6: Final answer
x = 180,485.29
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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.