Finding the Fourth Proportional to 339,989.70, 509,984.55 and 153,365.70
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Solution
The fourth proportional to 339,989.70, 509,984.55 and 153,365.70 is: 230,048.55
Step by Step Solution
- Step 1: Write the proportion equation
339,989.70 : 509,984.55 = 153,365.70 : x - Step 2: Convert to fraction form
339,989.70/509,984.55 = 153,365.70/x - Step 3: Cross multiply
339,989.70x = 509,984.55 × 153,365.70 - Step 4: Simplify right side
339,989.70x = 78,214,137,499.94 - Step 5: Solve for x
x = 78,214,137,499.94/339,989.70 - Step 6: Final answer
x = 230,048.55
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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.