Finding the Fourth Proportional to 340,509.79, 469,678.52 and 212,963.95
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Solution
The fourth proportional to 340,509.79, 469,678.52 and 212,963.95 is: 293,749.53
Step by Step Solution
- Step 1: Write the proportion equation
340,509.79 : 469,678.52 = 212,963.95 : x - Step 2: Convert to fraction form
340,509.79/469,678.52 = 212,963.95/x - Step 3: Cross multiply
340,509.79x = 469,678.52 × 212,963.95 - Step 4: Simplify right side
340,509.79x = 100,024,589,436.14 - Step 5: Solve for x
x = 100,024,589,436.14/340,509.79 - Step 6: Final answer
x = 293,749.53
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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.