Finding the Fourth Proportional to 430,698.21, 646,143.68 and 131,202.23
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Solution
The fourth proportional to 430,698.21, 646,143.68 and 131,202.23 is: 196,832.70
Step by Step Solution
- Step 1: Write the proportion equation
430,698.21 : 646,143.68 = 131,202.23 : x - Step 2: Convert to fraction form
430,698.21/646,143.68 = 131,202.23/x - Step 3: Cross multiply
430,698.21x = 646,143.68 × 131,202.23 - Step 4: Simplify right side
430,698.21x = 84,775,492,448.25 - Step 5: Solve for x
x = 84,775,492,448.25/430,698.21 - Step 6: Final answer
x = 196,832.70
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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.