Finding the Fourth Proportional to 390,202.13, 585,358.89 and 120,352.98
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Solution
The fourth proportional to 390,202.13, 585,358.89 and 120,352.98 is: 180,546.64
Step by Step Solution
- Step 1: Write the proportion equation
390,202.13 : 585,358.89 = 120,352.98 : x - Step 2: Convert to fraction form
390,202.13/585,358.89 = 120,352.98/x - Step 3: Cross multiply
390,202.13x = 585,358.89 × 120,352.98 - Step 4: Simplify right side
390,202.13x = 70,449,683,252.43 - Step 5: Solve for x
x = 70,449,683,252.43/390,202.13 - Step 6: Final answer
x = 180,546.64
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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.