Finding the Fourth Proportional to 430,734,190.05, 645,965,760.74 and 139,533,750.09
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Solution
The fourth proportional to 430,734,190.05, 645,965,760.74 and 139,533,750.09 is: 209,256,722.84
Step by Step Solution
- Step 1: Write the proportion equation
430,734,190.05 : 645,965,760.74 = 139,533,750.09 : x - Step 2: Convert to fraction form
430,734,190.05/645,965,760.74 = 139,533,750.09/x - Step 3: Cross multiply
430,734,190.05x = 645,965,760.74 × 139,533,750.09 - Step 4: Simplify right side
430,734,190.05x = 90,134,025,025,094,224 - Step 5: Solve for x
x = 90,134,025,025,094,224/430,734,190.05 - Step 6: Final answer
x = 209,256,722.84
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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.