Finding the Fourth Proportional to 509,394.25, 702,935.45 and 305,343.07
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Solution
The fourth proportional to 509,394.25, 702,935.45 and 305,343.07 is: 421,356.28
Step by Step Solution
- Step 1: Write the proportion equation
509,394.25 : 702,935.45 = 305,343.07 : x - Step 2: Convert to fraction form
509,394.25/702,935.45 = 305,343.07/x - Step 3: Cross multiply
509,394.25x = 702,935.45 × 305,343.07 - Step 4: Simplify right side
509,394.25x = 214,636,466,175.81 - Step 5: Solve for x
x = 214,636,466,175.81/509,394.25 - Step 6: Final answer
x = 421,356.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.