Finding the Fourth Proportional to 430,167.70, 645,251.55 and 243,543.70
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Solution
The fourth proportional to 430,167.70, 645,251.55 and 243,543.70 is: 365,315.55
Step by Step Solution
- Step 1: Write the proportion equation
430,167.70 : 645,251.55 = 243,543.70 : x - Step 2: Convert to fraction form
430,167.70/645,251.55 = 243,543.70/x - Step 3: Cross multiply
430,167.70x = 645,251.55 × 243,543.70 - Step 4: Simplify right side
430,167.70x = 157,146,949,917.74 - Step 5: Solve for x
x = 157,146,949,917.74/430,167.70 - Step 6: Final answer
x = 365,315.55
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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.