Finding the Fourth Proportional to 421,683.84, 581,913.72 and 230,698.80
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Solution
The fourth proportional to 421,683.84, 581,913.72 and 230,698.80 is: 318,358.88
Step by Step Solution
- Step 1: Write the proportion equation
421,683.84 : 581,913.72 = 230,698.80 : x - Step 2: Convert to fraction form
421,683.84/581,913.72 = 230,698.80/x - Step 3: Cross multiply
421,683.84x = 581,913.72 × 230,698.80 - Step 4: Simplify right side
421,683.84x = 134,246,796,907.54 - Step 5: Solve for x
x = 134,246,796,907.54/421,683.84 - Step 6: Final answer
x = 318,358.88
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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.