Finding the Fourth Proportional to 430,285.72, 645,448.56 and 130,809.28
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Solution
The fourth proportional to 430,285.72, 645,448.56 and 130,809.28 is: 196,219.99
Step by Step Solution
- Step 1: Write the proportion equation
430,285.72 : 645,448.56 = 130,809.28 : x - Step 2: Convert to fraction form
430,285.72/645,448.56 = 130,809.28/x - Step 3: Cross multiply
430,285.72x = 645,448.56 × 130,809.28 - Step 4: Simplify right side
430,285.72x = 84,430,661,410.64 - Step 5: Solve for x
x = 84,430,661,410.64/430,285.72 - Step 6: Final answer
x = 196,219.99
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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.