Finding the Fourth Proportional to 339,981.70, 509,972.55 and 153,357.70
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Solution
The fourth proportional to 339,981.70, 509,972.55 and 153,357.70 is: 230,036.55
Step by Step Solution
- Step 1: Write the proportion equation
339,981.70 : 509,972.55 = 153,357.70 : x - Step 2: Convert to fraction form
339,981.70/509,972.55 = 153,357.70/x - Step 3: Cross multiply
339,981.70x = 509,972.55 × 153,357.70 - Step 4: Simplify right side
339,981.70x = 78,208,217,331.14 - Step 5: Solve for x
x = 78,208,217,331.14/339,981.70 - Step 6: Final answer
x = 230,036.55
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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.