Finding the Fourth Proportional to 430,629.60, 645,944.40 and 131,107.80
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Solution
The fourth proportional to 430,629.60, 645,944.40 and 131,107.80 is: 196,661.70
Step by Step Solution
- Step 1: Write the proportion equation
430,629.60 : 645,944.40 = 131,107.80 : x - Step 2: Convert to fraction form
430,629.60/645,944.40 = 131,107.80/x - Step 3: Cross multiply
430,629.60x = 645,944.40 × 131,107.80 - Step 4: Simplify right side
430,629.60x = 84,688,349,206.32 - Step 5: Solve for x
x = 84,688,349,206.32/430,629.60 - Step 6: Final answer
x = 196,661.70
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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.