Finding the Fourth Proportional to 430,285.77, 645,423.39 and 193,461.21
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Solution
The fourth proportional to 430,285.77, 645,423.39 and 193,461.21 is: 290,189.45
Step by Step Solution
- Step 1: Write the proportion equation
430,285.77 : 645,423.39 = 193,461.21 : x - Step 2: Convert to fraction form
430,285.77/645,423.39 = 193,461.21/x - Step 3: Cross multiply
430,285.77x = 645,423.39 × 193,461.21 - Step 4: Simplify right side
430,285.77x = 124,864,389,991.70 - Step 5: Solve for x
x = 124,864,389,991.70/430,285.77 - Step 6: Final answer
x = 290,189.45
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1.5x scale
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.