Finding the Fourth Proportional to 430,235.96, 645,388.08 and 130,742.68
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Solution
The fourth proportional to 430,235.96, 645,388.08 and 130,742.68 is: 196,124.39
Step by Step Solution
- Step 1: Write the proportion equation
430,235.96 : 645,388.08 = 130,742.68 : x - Step 2: Convert to fraction form
430,235.96/645,388.08 = 130,742.68/x - Step 3: Cross multiply
430,235.96x = 645,388.08 × 130,742.68 - Step 4: Simplify right side
430,235.96x = 84,379,767,219.25 - Step 5: Solve for x
x = 84,379,767,219.25/430,235.96 - Step 6: Final answer
x = 196,124.39
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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.