Finding the Fourth Proportional to 339,905.70, 509,858.55 and 153,281.70
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Solution
The fourth proportional to 339,905.70, 509,858.55 and 153,281.70 is: 229,922.55
Step by Step Solution
- Step 1: Write the proportion equation
339,905.70 : 509,858.55 = 153,281.70 : x - Step 2: Convert to fraction form
339,905.70/509,858.55 = 153,281.70/x - Step 3: Cross multiply
339,905.70x = 509,858.55 × 153,281.70 - Step 4: Simplify right side
339,905.70x = 78,151,985,303.54 - Step 5: Solve for x
x = 78,151,985,303.54/339,905.70 - Step 6: Final answer
x = 229,922.55
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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.